39921452 has 6 divisors (see below), whose sum is σ = 69862548. Its totient is φ = 19960724.

The previous prime is 39921443. The next prime is 39921473. The reversal of 39921452 is 25412993.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4990178 + ... + 4990185.

It is an arithmetic number, because the mean of its divisors is an integer number (11643758).

Almost surely, 2^39921452 is an apocalyptic number.

It is an amenable number.

39921452 is a deficient number, since it is larger than the sum of its proper divisors (29941096).

39921452 is a wasteful number, since it uses less digits than its factorization.

39921452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9980367 (or 9980365 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 39921452 is about 6318.3425041699. The cubic root of 39921452 is about 341.7711839938.

The spelling of 39921452 in words is "thirty-nine million, nine hundred twenty-one thousand, four hundred fifty-two".