39397809111 has 24 divisors (see below), whose sum is σ = 55819805904. Its totient is φ = 24712396800.

The previous prime is 39397809109. The next prime is 39397809131. The reversal of 39397809111 is 11190879393.

It is not a de Polignac number, because 39397809111 - 2¹ = 39397809109 is a prime.

It is a super-2 number, since 2×39397809111² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39397809131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4098711 + ... + 4108311.

It is an arithmetic number, because the mean of its divisors is an integer number (2325825246).

Almost surely, 2^39397809111 is an apocalyptic number.

39397809111 is a deficient number, since it is larger than the sum of its proper divisors (16421996793).

39397809111 is a wasteful number, since it uses less digits than its factorization.

39397809111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14371 (or 14354 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 51.

The spelling of 39397809111 in words is "thirty-nine billion, three hundred ninety-seven million, eight hundred nine thousand, one hundred eleven".