12039965 has 16 divisors (see below), whose sum is σ = 16571520. Its totient is φ = 8226240.

The previous prime is 12039947. The next prime is 12039991. The reversal of 12039965 is 56993021.

It is not a de Polignac number, because 12039965 - 2¹² = 12035869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14255 + ... + 15075.

It is an arithmetic number, because the mean of its divisors is an integer number (1035720).

Almost surely, 2^12039965 is an apocalyptic number.

It is an amenable number.

12039965 is a deficient number, since it is larger than the sum of its proper divisors (4531555).

12039965 is an equidigital number, since it uses as much as digits as its factorization.

12039965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 12039965 is about 3469.8652711597. The cubic root of 12039965 is about 229.1967252399.

The spelling of 12039965 in words is "twelve million, thirty-nine thousand, nine hundred sixty-five".