3894804450 has 72 divisors (see below), whose sum is σ = 10485453888. Its totient is φ = 1036489440.

The previous prime is 3894804439. The next prime is 3894804451. The reversal of 3894804450 is 544084983.

It is a happy number.

3894804450 is a `hidden beast` number, since 3 + 89 + 480 + 44 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 3894804396 and 3894804405.

It is not an unprimeable number, because it can be changed into a prime (3894804451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 217747 + ... + 234953.

It is an arithmetic number, because the mean of its divisors is an integer number (145631304).

Almost surely, 2^3894804450 is an apocalyptic number.

3894804450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3894804450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5242726944).

3894804450 is an abundant number, since it is smaller than the sum of its proper divisors (6590649438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3894804450 is a wasteful number, since it uses less digits than its factorization.

3894804450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17728 (or 17720 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 3894804450 is about 62408.3684292419. The cubic root of 3894804450 is about 1573.3616220595.

The spelling of 3894804450 in words is "three billion, eight hundred ninety-four million, eight hundred four thousand, four hundred fifty".