3947913810 has 64 divisors (see below), whose sum is σ = 10534527360. Its totient is φ = 1052101440.

The previous prime is 3947913799. The next prime is 3947913817. The reversal of 3947913810 is 183197493.

3947913810 is a `hidden beast` number, since 39 + 479 + 138 + 10 = 666.

It is a super-2 number, since 2×3947913810² = 31172046902377432200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (3947913817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 529005 + ... + 536415.

It is an arithmetic number, because the mean of its divisors is an integer number (164601990).

Almost surely, 2^3947913810 is an apocalyptic number.

3947913810 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3947913810 is an abundant number, since it is smaller than the sum of its proper divisors (6586613550).

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

3947913810 is a wasteful number, since it uses less digits than its factorization.

3947913810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9400 (or 9394 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 3947913810 is about 62832.4264213949. The cubic root of 3947913810 is about 1580.4807875616.

The spelling of 3947913810 in words is "three billion, nine hundred forty-seven million, nine hundred thirteen thousand, eight hundred ten".