12999375 has 30 divisors (see below), whose sum is σ = 23473736. Its totient is φ = 6930000.

The previous prime is 12999367. The next prime is 12999379. The reversal of 12999375 is 57399921.

It is a happy number.

It is not a de Polignac number, because 12999375 - 2³ = 12999367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12999375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12999379) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4470 + ... + 6780.

Almost surely, 2^12999375 is an apocalyptic number.

12999375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12999375 is a deficient number, since it is larger than the sum of its proper divisors (10474361).

12999375 is an equidigital number, since it uses as much as digits as its factorization.

12999375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337 (or 2319 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 12999375 is about 3605.4646025166. The cubic root of 12999375 is about 235.1297005471.

The spelling of 12999375 in words is "twelve million, nine hundred ninety-nine thousand, three hundred seventy-five".