40039579894 has 8 divisors (see below), whose sum is σ = 60117626448. Its totient is φ = 20000371080.

The previous prime is 40039579837. The next prime is 40039579907. The reversal of 40039579894 is 49897593004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9706857 + ... + 9710980.

It is an arithmetic number, because the mean of its divisors is an integer number (7514703306).

Almost surely, 2^40039579894 is an apocalyptic number.

40039579894 is a deficient number, since it is larger than the sum of its proper divisors (20078046554).

40039579894 is a wasteful number, since it uses less digits than its factorization.

40039579894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19418870.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 40039579894 in words is "forty billion, thirty-nine million, five hundred seventy-nine thousand, eight hundred ninety-four".