12399051 has 8 divisors (see below), whose sum is σ = 18893824. Its totient is φ = 7085160.

The previous prime is 12399041. The next prime is 12399061. The reversal of 12399051 is 15099321.

It is an interprime number because it is at equal distance from previous prime (12399041) and next prime (12399061).

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

It is not a de Polignac number, because 12399051 - 2⁶ = 12398987 is a prime.

It is a super-4 number, since 4×12399051⁴ (a number of 29 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12399011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295195 + ... + 295236.

It is an arithmetic number, because the mean of its divisors is an integer number (2361728).

Almost surely, 2^12399051 is an apocalyptic number.

12399051 is a deficient number, since it is larger than the sum of its proper divisors (6494773).

12399051 is an equidigital number, since it uses as much as digits as its factorization.

12399051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590441.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 12399051 is about 3521.2286208084. The cubic root of 12399051 is about 231.4530006111.

The spelling of 12399051 in words is "twelve million, three hundred ninety-nine thousand, fifty-one".