4139957994 has 64 divisors (see below), whose sum is σ = 8842944000. Its totient is φ = 1288405440.

The previous prime is 4139957981. The next prime is 4139958037. The reversal of 4139957994 is 4997599314.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2621097 + ... + 2622675.

It is an arithmetic number, because the mean of its divisors is an integer number (138171000).

Almost surely, 2^4139957994 is an apocalyptic number.

4139957994 is an abundant number, since it is smaller than the sum of its proper divisors (4702986006).

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

4139957994 is a wasteful number, since it uses less digits than its factorization.

4139957994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923.

The product of its digits is 11022480, while the sum is 60.

The square root of 4139957994 is about 64342.5053444455. The cubic root of 4139957994 is about 1605.7033429041.

The spelling of 4139957994 in words is "four billion, one hundred thirty-nine million, nine hundred fifty-seven thousand, nine hundred ninety-four".