13899960 has 48 divisors (see below), whose sum is σ = 45176040. Its totient is φ = 3706560.

The previous prime is 13899959. The next prime is 13899967. The reversal of 13899960 is 6999831.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13899967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18946 + ... + 19665.

Almost surely, 2^13899960 is an apocalyptic number.

13899960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13899960 is an abundant number, since it is smaller than the sum of its proper divisors (31276080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13899960 is a wasteful number, since it uses less digits than its factorization.

13899960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38628 (or 38621 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 13899960 is about 3728.2650120398. The cubic root of 13899960 is about 240.4387806426.

The spelling of 13899960 in words is "thirteen million, eight hundred ninety-nine thousand, nine hundred sixty".