13988477437 has 4 divisors (see below), whose sum is σ = 15260157216. Its totient is φ = 12716797660.

The previous prime is 13988477389. The next prime is 13988477441. The reversal of 13988477437 is 73477488931.

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.

It is a cyclic number.

It is not a de Polignac number, because 13988477437 - 2⁷ = 13988477309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13988477837) 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, 635839873 + ... + 635839894.

It is an arithmetic number, because the mean of its divisors is an integer number (3815039304).

Almost surely, 2^13988477437 is an apocalyptic number.

It is an amenable number.

13988477437 is a deficient number, since it is larger than the sum of its proper divisors (1271679779).

13988477437 is a wasteful number, since it uses less digits than its factorization.

13988477437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271679778.

The product of its digits is 28449792, while the sum is 61.

The spelling of 13988477437 in words is "thirteen billion, nine hundred eighty-eight million, four hundred seventy-seven thousand, four hundred thirty-seven".