39597030021 has 4 divisors (see below), whose sum is σ = 52796040032. Its totient is φ = 26398020012.

The previous prime is 39597029999. The next prime is 39597030049. The reversal of 39597030021 is 12003079593.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 39597030021 - 2¹³ = 39597021829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39597030721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6599505001 + ... + 6599505006.

It is an arithmetic number, because the mean of its divisors is an integer number (13199010008).

Almost surely, 2^39597030021 is an apocalyptic number.

It is an amenable number.

39597030021 is a deficient number, since it is larger than the sum of its proper divisors (13199010011).

39597030021 is a wasteful number, since it uses less digits than its factorization.

39597030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13199010010.

The product of its (nonzero) digits is 51030, while the sum is 39.

The spelling of 39597030021 in words is "thirty-nine billion, five hundred ninety-seven million, thirty thousand, twenty-one".