12402939 has 8 divisors (see below), whose sum is σ = 16736832. Its totient is φ = 8168840.

The previous prime is 12402931. The next prime is 12402941. The reversal of 12402939 is 93920421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12402939 - 2³ = 12402931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12402931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24657 + ... + 25154.

It is an arithmetic number, because the mean of its divisors is an integer number (2092104).

Almost surely, 2^12402939 is an apocalyptic number.

12402939 is a deficient number, since it is larger than the sum of its proper divisors (4333893).

12402939 is an equidigital number, since it uses as much as digits as its factorization.

12402939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49897.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 12402939 is about 3521.7806575651. The cubic root of 12402939 is about 231.4771905060.

The spelling of 12402939 in words is "twelve million, four hundred two thousand, nine hundred thirty-nine".