12400998 has 8 divisors (see below), whose sum is σ = 24802008. Its totient is φ = 4133664.

The previous prime is 12400987. The next prime is 12401027. The reversal of 12400998 is 89900421.

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

12400998 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1033411 + ... + 1033422.

It is an arithmetic number, because the mean of its divisors is an integer number (3100251).

Almost surely, 2^12400998 is an apocalyptic number.

12400998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12400998 is a wasteful number, since it uses less digits than its factorization.

12400998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066838.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12400998 is about 3521.5050759583. The cubic root of 12400998 is about 231.4651148556.

The spelling of 12400998 in words is "twelve million, four hundred thousand, nine hundred ninety-eight".