39530130921 has 32 divisors (see below), whose sum is σ = 59633318400. Its totient is φ = 25873013520.

The previous prime is 39530130917. The next prime is 39530130947. The reversal of 39530130921 is 12903103593.

39530130921 is a `hidden beast` number, since 3 + 9 + 530 + 1 + 30 + 92 + 1 = 666.

It is not a de Polignac number, because 39530130921 - 2² = 39530130917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39530130961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1237926 + ... + 1269456.

It is an arithmetic number, because the mean of its divisors is an integer number (1863541200).

Almost surely, 2^39530130921 is an apocalyptic number.

It is an amenable number.

39530130921 is a deficient number, since it is larger than the sum of its proper divisors (20103187479).

39530130921 is a wasteful number, since it uses less digits than its factorization.

39530130921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32386 (or 32380 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The spelling of 39530130921 in words is "thirty-nine billion, five hundred thirty million, one hundred thirty thousand, nine hundred twenty-one".