12400927 has 14 divisors (see below), whose sum is σ = 15589736. Its totient is φ = 9663060.

The previous prime is 12400909. The next prime is 12400943. The reversal of 12400927 is 72900421.

12400927 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12400927 - 2¹¹ = 12398879 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400907) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1127352 + ... + 1127362.

Almost surely, 2^12400927 is an apocalyptic number.

12400927 is a deficient number, since it is larger than the sum of its proper divisors (3188809).

12400927 is an frugal number, since it uses more digits than its factorization.

12400927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 18 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 12400927 is about 3521.4949950270. The cubic root of 12400927 is about 231.4646731155.

Multiplying 12400927 by its product of nonzero digits (1008), we get a square (12500134416 = 111804²).

The spelling of 12400927 in words is "twelve million, four hundred thousand, nine hundred twenty-seven".