39397479393 has 32 divisors (see below), whose sum is σ = 56782978560. Its totient is φ = 24217038720.

The previous prime is 39397479389. The next prime is 39397479419.

39397479393 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 39397479393 - 2² = 39397479389 is a prime.

It is a super-2 number, since 2×39397479393² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39397479383) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 660130 + ... + 717332.

It is an arithmetic number, because the mean of its divisors is an integer number (1774468080).

Almost surely, 2^39397479393 is an apocalyptic number.

It is an amenable number.

39397479393 is a deficient number, since it is larger than the sum of its proper divisors (17385499167).

39397479393 is a wasteful number, since it uses less digits than its factorization.

39397479393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57549.

The product of its digits is 104162436, while the sum is 66.

The spelling of 39397479393 in words is "thirty-nine billion, three hundred ninety-seven million, four hundred seventy-nine thousand, three hundred ninety-three".