3894727860 has 120 divisors (see below), whose sum is σ = 12258536136. Its totient is φ = 1035141120.

The previous prime is 3894727849. The next prime is 3894727919. The reversal of 3894727860 is 687274983.

It can be written as a sum of positive squares in 4 ways, for example, as 20412324 + 3874315536 = 4518^2 + 62244^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 3894727797 and 3894727806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 503220 + ... + 510900.

Almost surely, 2^3894727860 is an apocalyptic number.

3894727860 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3894727860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6129268068).

3894727860 is an abundant number, since it is smaller than the sum of its proper divisors (8363808276).

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

3894727860 is a wasteful number, since it uses less digits than its factorization.

3894727860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8015 (or 8004 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The square root of 3894727860 is about 62407.7548065943. The cubic root of 3894727860 is about 1573.3513087855.

The spelling of 3894727860 in words is "three billion, eight hundred ninety-four million, seven hundred twenty-seven thousand, eight hundred sixty".