39442977 has 32 divisors (see below), whose sum is σ = 67208960. Its totient is φ = 22394880.

The previous prime is 39442969. The next prime is 39443003. The reversal of 39442977 is 77924493.

It is not a de Polignac number, because 39442977 - 2³ = 39442969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39442927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33633 + ... + 34785.

It is an arithmetic number, because the mean of its divisors is an integer number (2100280).

Almost surely, 2^39442977 is an apocalyptic number.

It is an amenable number.

39442977 is a deficient number, since it is larger than the sum of its proper divisors (27765983).

39442977 is a wasteful number, since it uses less digits than its factorization.

39442977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350 (or 1344 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 39442977 is about 6280.3644002558. The cubic root of 39442977 is about 340.4002696533.

The spelling of 39442977 in words is "thirty-nine million, four hundred forty-two thousand, nine hundred seventy-seven".