12439075 has 12 divisors (see below), whose sum is σ = 16827048. Its totient is φ = 9046400.

The previous prime is 12439073. The next prime is 12439081. The reversal of 12439075 is 57093421.

It is not a de Polignac number, because 12439075 - 2¹ = 12439073 is a prime.

It is a super-4 number, since 4×12439075⁴ (a number of 29 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12439073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22342 + ... + 22891.

It is an arithmetic number, because the mean of its divisors is an integer number (1402254).

Almost surely, 2^12439075 is an apocalyptic number.

12439075 is a deficient number, since it is larger than the sum of its proper divisors (4387973).

12439075 is a wasteful number, since it uses less digits than its factorization.

12439075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45254 (or 45249 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 12439075 is about 3526.9072854273. The cubic root of 12439075 is about 231.7017757002.

The spelling of 12439075 in words is "twelve million, four hundred thirty-nine thousand, seventy-five".