12400475 has 6 divisors (see below), whose sum is σ = 15376620. Its totient is φ = 9920360.

The previous prime is 12400457. The next prime is 12400489. The reversal of 12400475 is 57400421.

It is not a de Polignac number, because 12400475 - 2¹⁰ = 12399451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12400475.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 247985 + ... + 248034.

It is an arithmetic number, because the mean of its divisors is an integer number (2562770).

Almost surely, 2^12400475 is an apocalyptic number.

12400475 is a deficient number, since it is larger than the sum of its proper divisors (2976145).

12400475 is an equidigital number, since it uses as much as digits as its factorization.

12400475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496029 (or 496024 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 12400475 is about 3521.4308171537. The cubic root of 12400475 is about 231.4618608713.

Adding to 12400475 its reverse (57400421), we get a palindrome (69800896).

The spelling of 12400475 in words is "twelve million, four hundred thousand, four hundred seventy-five".