13779977 has 8 divisors (see below), whose sum is σ = 14418432. Its totient is φ = 13156000.

The previous prime is 13779973. The next prime is 13780003. The reversal of 13779977 is 77997731.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13779977 - 2² = 13779973 is a prime.

It is a super-2 number, since 2×13779977² = 379775532241058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13779971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1649 + ... + 5502.

It is an arithmetic number, because the mean of its divisors is an integer number (1802304).

Almost surely, 2^13779977 is an apocalyptic number.

It is an amenable number.

13779977 is a deficient number, since it is larger than the sum of its proper divisors (638455).

13779977 is an equidigital number, since it uses as much as digits as its factorization.

13779977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7239.

The product of its digits is 583443, while the sum is 50.

The square root of 13779977 is about 3712.1391407112. The cubic root of 13779977 is about 239.7449663555.

The spelling of 13779977 in words is "thirteen million, seven hundred seventy-nine thousand, nine hundred seventy-seven".