39918648 has 64 divisors (see below), whose sum is σ = 124427520. Its totient is φ = 10368000.

The previous prime is 39918629. The next prime is 39918653. The reversal of 39918648 is 84681993.

It is a junction number, because it is equal to n+sod(n) for n = 39918597 and 39918606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8953 + ... + 12648.

It is an arithmetic number, because the mean of its divisors is an integer number (1944180).

Almost surely, 2^39918648 is an apocalyptic number.

It is an amenable number.

39918648 is an abundant number, since it is smaller than the sum of its proper divisors (84508872).

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

39918648 is a wasteful number, since it uses less digits than its factorization.

39918648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21628 (or 21624 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 39918648 is about 6318.1206066361. The cubic root of 39918648 is about 341.7631820400.

The spelling of 39918648 in words is "thirty-nine million, nine hundred eighteen thousand, six hundred forty-eight".