39977752 has 8 divisors (see below), whose sum is σ = 74958300. Its totient is φ = 19988872.

The previous prime is 39977737. The next prime is 39977759. The reversal of 39977752 is 25777993.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 39977696 and 39977705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39977759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2498602 + ... + 2498617.

Almost surely, 2^39977752 is an apocalyptic number.

It is an amenable number.

39977752 is a deficient number, since it is larger than the sum of its proper divisors (34980548).

39977752 is a wasteful number, since it uses less digits than its factorization.

39977752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4997225 (or 4997221 counting only the distinct ones).

The product of its digits is 833490, while the sum is 49.

The square root of 39977752 is about 6322.7962168648. The cubic root of 39977752 is about 341.9317716681.

The spelling of 39977752 in words is "thirty-nine million, nine hundred seventy-seven thousand, seven hundred fifty-two".