12399954 has 16 divisors (see below), whose sum is σ = 28342848. Its totient is φ = 3542832.

The previous prime is 12399941. The next prime is 12399973. The reversal of 12399954 is 45999321.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 295237 = 12399954 / (1 + 2 + 3 + 9 + 9 + 9 + 5 + 4).

It is a Curzon number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 147577 + ... + 147660.

It is an arithmetic number, because the mean of its divisors is an integer number (1771428).

Almost surely, 2^12399954 is an apocalyptic number.

12399954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12399954 is an abundant number, since it is smaller than the sum of its proper divisors (15942894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12399954 is a wasteful number, since it uses less digits than its factorization.

12399954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295249.

The product of its digits is 87480, while the sum is 42.

The square root of 12399954 is about 3521.3568407647. The cubic root of 12399954 is about 231.4586192396.

The spelling of 12399954 in words is "twelve million, three hundred ninety-nine thousand, nine hundred fifty-four".