39917991452 has 12 divisors (see below), whose sum is σ = 70389741576. Its totient is φ = 19806636720.

The previous prime is 39917991437. The next prime is 39917991479. The reversal of 39917991452 is 25419971993.

It is a junction number, because it is equal to n+sod(n) for n = 39917991391 and 39917991400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38089163 + ... + 38090210.

It is an arithmetic number, because the mean of its divisors is an integer number (5865811798).

Almost surely, 2^39917991452 is an apocalyptic number.

It is an amenable number.

39917991452 is a deficient number, since it is larger than the sum of its proper divisors (30471750124).

39917991452 is a wasteful number, since it uses less digits than its factorization.

39917991452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76179508 (or 76179506 counting only the distinct ones).

The product of its digits is 5511240, while the sum is 59.

The spelling of 39917991452 in words is "thirty-nine billion, nine hundred seventeen million, nine hundred ninety-one thousand, four hundred fifty-two".