39321916 has 6 divisors (see below), whose sum is σ = 68813360. Its totient is φ = 19660956.

The previous prime is 39321913. The next prime is 39321923. The reversal of 39321916 is 61912393.

It is a super-2 number, since 2×39321916² = 3092426155822112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39321913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4915236 + ... + 4915243.

Almost surely, 2^39321916 is an apocalyptic number.

It is an amenable number.

39321916 is a deficient number, since it is larger than the sum of its proper divisors (29491444).

39321916 is a wasteful number, since it uses less digits than its factorization.

39321916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9830483 (or 9830481 counting only the distinct ones).

The product of its digits is 8748, while the sum is 34.

The square root of 39321916 is about 6270.7189380485. The cubic root of 39321916 is about 340.0516530521.

The spelling of 39321916 in words is "thirty-nine million, three hundred twenty-one thousand, nine hundred sixteen".