39115965 has 48 divisors (see below), whose sum is σ = 76662720. Its totient is φ = 16934400.

The previous prime is 39115943. The next prime is 39115969. The reversal of 39115965 is 56951193.

It is not a de Polignac number, because 39115965 - 2⁷ = 39115837 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39115969) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12565 + ... + 15365.

It is an arithmetic number, because the mean of its divisors is an integer number (1597140).

Almost surely, 2^39115965 is an apocalyptic number.

39115965 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39115965 is a deficient number, since it is larger than the sum of its proper divisors (37546755).

39115965 is a wasteful number, since it uses less digits than its factorization.

39115965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842 (or 2835 counting only the distinct ones).

The product of its digits is 36450, while the sum is 39.

The square root of 39115965 is about 6254.2757374455. The cubic root of 39115965 is about 339.4569329293.

The spelling of 39115965 in words is "thirty-nine million, one hundred fifteen thousand, nine hundred sixty-five".