39945421232 has 10 divisors (see below), whose sum is σ = 77394253668. Its totient is φ = 19972710608.

The previous prime is 39945421207. The next prime is 39945421273. The reversal of 39945421232 is 23212454993.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248294398 + ... + 1248294429.

Almost surely, 2^39945421232 is an apocalyptic number.

It is an amenable number.

39945421232 is a deficient number, since it is larger than the sum of its proper divisors (37448832436).

39945421232 is a wasteful number, since it uses less digits than its factorization.

39945421232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496588835 (or 2496588829 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The spelling of 39945421232 in words is "thirty-nine billion, nine hundred forty-five million, four hundred twenty-one thousand, two hundred thirty-two".