3901859440 has 40 divisors (see below), whose sum is σ = 9087387120. Its totient is φ = 1558066176.

The previous prime is 3901859419. The next prime is 3901859459. The reversal of 3901859440 is 449581093.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×3901859440² = 30449014179034227200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5416 + ... + 88504.

It is an arithmetic number, because the mean of its divisors is an integer number (227184678).

Almost surely, 2^3901859440 is an apocalyptic number.

It is an amenable number.

3901859440 is an abundant number, since it is smaller than the sum of its proper divisors (5185527680).

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

3901859440 is a wasteful number, since it uses less digits than its factorization.

3901859440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83689 (or 83683 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 3901859440 is about 62464.8656446166. The cubic root of 3901859440 is about 1574.3110368705.

The spelling of 3901859440 in words is "three billion, nine hundred one million, eight hundred fifty-nine thousand, four hundred forty".