39921977057 has 8 divisors (see below), whose sum is σ = 40495059072. Its totient is φ = 39349195200.

The previous prime is 39921977027. The next prime is 39921977077. The reversal of 39921977057 is 75077912993.

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

It is a cyclic number.

It is not a de Polignac number, because 39921977057 - 2⁶ = 39921976993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39921976987 and 39921977005.

It is not an unprimeable number, because it can be changed into a prime (39921977027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200057 + ... + 346217.

It is an arithmetic number, because the mean of its divisors is an integer number (5061882384).

Almost surely, 2^39921977057 is an apocalyptic number.

It is an amenable number.

39921977057 is a deficient number, since it is larger than the sum of its proper divisors (573082015).

39921977057 is a wasteful number, since it uses less digits than its factorization.

39921977057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150079.

The product of its (nonzero) digits is 7501410, while the sum is 59.

The spelling of 39921977057 in words is "thirty-nine billion, nine hundred twenty-one million, nine hundred seventy-seven thousand, fifty-seven".