3894990 has 96 divisors (see below), whose sum is σ = 10916640. Its totient is φ = 887040.

The previous prime is 3894977. The next prime is 3894991. The reversal of 3894990 is 994983.

3894990 = 83² + 84² + ... + 230².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3894991) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 105252 + ... + 105288.

It is an arithmetic number, because the mean of its divisors is an integer number (113715).

Almost surely, 2^3894990 is an apocalyptic number.

3894990 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 3894990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5458320).

3894990 is an abundant number, since it is smaller than the sum of its proper divisors (7021650).

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

3894990 is a wasteful number, since it uses less digits than its factorization.

3894990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 3894990 is about 1973.5729021245. The cubic root of 3894990 is about 157.3386606849.

It can be divided in two parts, 3894 and 990, that added together give a palindrome (4884).

The spelling of 3894990 in words is "three million, eight hundred ninety-four thousand, nine hundred ninety".