3950139456 has 42 divisors (see below), whose sum is σ = 11322363182. Its totient is φ = 1316712960.

The previous prime is 3950139451. The next prime is 3950139469. The reversal of 3950139456 is 6549310593.

3950139456 is a `hidden beast` number, since 3 + 9 + 501 + 3 + 94 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2747437056 + 1202702400 = 52416^2 + 34680^2 .

It is not an unprimeable number, because it can be changed into a prime (3950139451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3428365 + ... + 3429516.

Almost surely, 2^3950139456 is an apocalyptic number.

3950139456 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3950139456 is an abundant number, since it is smaller than the sum of its proper divisors (7372223726).

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

3950139456 is a wasteful number, since it uses less digits than its factorization.

3950139456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6857899 (or 6857886 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 45.

The square root of 3950139456 is about 62850.1348924567. The cubic root of 3950139456 is about 1580.7777317286. Note that the first 4 decimals are identical.

The spelling of 3950139456 in words is "three billion, nine hundred fifty million, one hundred thirty-nine thousand, four hundred fifty-six".