13779998 has 8 divisors (see below), whose sum is σ = 20859960. Its totient is φ = 6826680.

The previous prime is 13779973. The next prime is 13780003. The reversal of 13779998 is 89997731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31388 + ... + 31823.

It is an arithmetic number, because the mean of its divisors is an integer number (2607495).

Almost surely, 2^13779998 is an apocalyptic number.

13779998 is a deficient number, since it is larger than the sum of its proper divisors (7079962).

13779998 is a wasteful number, since it uses less digits than its factorization.

13779998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63322.

The product of its digits is 857304, while the sum is 53.

The square root of 13779998 is about 3712.1419692679. The cubic root of 13779998 is about 239.7450881419.

The spelling of 13779998 in words is "thirteen million, seven hundred seventy-nine thousand, nine hundred ninety-eight".