3900487956 has 48 divisors (see below), whose sum is σ = 9647092224. Its totient is φ = 1222337536.

The previous prime is 3900487951. The next prime is 3900487961. The reversal of 3900487956 is 6597840093.

3900487956 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3900487951) and next prime (3900487961).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 3900487899 and 3900487908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3900487951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184381 + ... + 204443.

It is an arithmetic number, because the mean of its divisors is an integer number (200981088).

Almost surely, 2^3900487956 is an apocalyptic number.

It is an amenable number.

3900487956 is an abundant number, since it is smaller than the sum of its proper divisors (5746604268).

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

3900487956 is a wasteful number, since it uses less digits than its factorization.

3900487956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21040 (or 21038 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The square root of 3900487956 is about 62453.8866364616. The cubic root of 3900487956 is about 1574.1265611133.

The spelling of 3900487956 in words is "three billion, nine hundred million, four hundred eighty-seven thousand, nine hundred fifty-six".