13409988 has 24 divisors (see below), whose sum is σ = 31358208. Its totient is φ = 4460256.

The previous prime is 13409969. The next prime is 13410031. The reversal of 13409988 is 88990431.

13409988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6445 + ... + 8267.

It is an arithmetic number, because the mean of its divisors is an integer number (1306592).

Almost surely, 2^13409988 is an apocalyptic number.

It is an amenable number.

13409988 is an abundant number, since it is smaller than the sum of its proper divisors (17948220).

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

13409988 is a wasteful number, since it uses less digits than its factorization.

13409988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443 (or 2441 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 13409988 is about 3661.9650462559. The cubic root of 13409988 is about 237.5797730177.

The spelling of 13409988 in words is "thirteen million, four hundred nine thousand, nine hundred eighty-eight".