13791998 has 16 divisors (see below), whose sum is σ = 23896944. Its totient is φ = 5900160.

The previous prime is 13791977. The next prime is 13792001. The reversal of 13791998 is 89919731.

It is a happy number.

It is a congruent number.

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, 18065 + ... + 18812.

It is an arithmetic number, because the mean of its divisors is an integer number (1493559).

Almost surely, 2^13791998 is an apocalyptic number.

13791998 is a deficient number, since it is larger than the sum of its proper divisors (10104946).

13791998 is a wasteful number, since it uses less digits than its factorization.

13791998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36907.

The product of its digits is 122472, while the sum is 47.

The square root of 13791998 is about 3713.7579350302. The cubic root of 13791998 is about 239.8146601490.

The spelling of 13791998 in words is "thirteen million, seven hundred ninety-one thousand, nine hundred ninety-eight".