13942912397 has 4 divisors (see below), whose sum is σ = 13944394656. Its totient is φ = 13941430140.

The previous prime is 13942912339. The next prime is 13942912441. The reversal of 13942912397 is 79321924931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79321924931 = 311 ⋅255054421.

It is a cyclic number.

It is not a de Polignac number, because 13942912397 - 2¹⁰ = 13942911373 is a prime.

It is a super-2 number, since 2×13942912397² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13942912307) 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, 726929 + ... + 745862.

It is an arithmetic number, because the mean of its divisors is an integer number (3486098664).

Almost surely, 2^13942912397 is an apocalyptic number.

It is an amenable number.

13942912397 is a deficient number, since it is larger than the sum of its proper divisors (1482259).

13942912397 is an equidigital number, since it uses as much as digits as its factorization.

13942912397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482258.

The product of its digits is 734832, while the sum is 50.

The spelling of 13942912397 in words is "thirteen billion, nine hundred forty-two million, nine hundred twelve thousand, three hundred ninety-seven".