13935889 has 4 divisors (see below), whose sum is σ = 15202800. Its totient is φ = 12668980.

The previous prime is 13935881. The next prime is 13935947. The reversal of 13935889 is 98853931.

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 13935889 - 2³ = 13935881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13935881) 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, 633439 + ... + 633460.

It is an arithmetic number, because the mean of its divisors is an integer number (3800700).

Almost surely, 2^13935889 is an apocalyptic number.

It is an amenable number.

13935889 is a deficient number, since it is larger than the sum of its proper divisors (1266911).

13935889 is a wasteful number, since it uses less digits than its factorization.

13935889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266910.

The product of its digits is 233280, while the sum is 46.

The square root of 13935889 is about 3733.0803634532. The cubic root of 13935889 is about 240.6457666678.

The spelling of 13935889 in words is "thirteen million, nine hundred thirty-five thousand, eight hundred eighty-nine".