13900402998923 has 4 divisors (see below), whose sum is σ = 15886174855920. Its totient is φ = 11914631141928.

The previous prime is 13900402998899. The next prime is 13900402998949. The reversal of 13900402998923 is 32989920400931.

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

It is a cyclic number.

It is not a de Polignac number, because 13900402998923 - 2⁸ = 13900402998667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13900402998323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 992885928488 + ... + 992885928501.

It is an arithmetic number, because the mean of its divisors is an integer number (3971543713980).

Almost surely, 2^{13900402998923} is an apocalyptic number.

13900402998923 is a deficient number, since it is larger than the sum of its proper divisors (1985771856997).

13900402998923 is an equidigital number, since it uses as much as digits as its factorization.

13900402998923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985771856996.

The product of its (nonzero) digits is 7558272, while the sum is 59.

The spelling of 13900402998923 in words is "thirteen trillion, nine hundred billion, four hundred two million, nine hundred ninety-eight thousand, nine hundred twenty-three".