12400694 has 4 divisors (see below), whose sum is σ = 18601044. Its totient is φ = 6200346.

The previous prime is 12400691. The next prime is 12400697. The reversal of 12400694 is 49600421.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12400691) and next prime (12400697).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3100172 + ... + 3100175.

It is an arithmetic number, because the mean of its divisors is an integer number (4650261).

Almost surely, 2^12400694 is an apocalyptic number.

12400694 is a deficient number, since it is larger than the sum of its proper divisors (6200350).

12400694 is an equidigital number, since it uses as much as digits as its factorization.

12400694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6200349.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 12400694 is about 3521.4619123313. The cubic root of 12400694 is about 231.4632234495.

The spelling of 12400694 in words is "twelve million, four hundred thousand, six hundred ninety-four".