13980777 has 4 divisors (see below), whose sum is σ = 18641040. Its totient is φ = 9320516.

The previous prime is 13980763. The next prime is 13980779. The reversal of 13980777 is 77708931.

It is a happy number.

13980777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13980777 - 2¹⁰ = 13979753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13980779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2330127 + ... + 2330132.

It is an arithmetic number, because the mean of its divisors is an integer number (4660260).

Almost surely, 2^13980777 is an apocalyptic number.

It is an amenable number.

13980777 is a deficient number, since it is larger than the sum of its proper divisors (4660263).

13980777 is an equidigital number, since it uses as much as digits as its factorization.

13980777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4660262.

The product of its (nonzero) digits is 74088, while the sum is 42.

The square root of 13980777 is about 3739.0877229613. The cubic root of 13980777 is about 240.9038659751.

The spelling of 13980777 in words is "thirteen million, nine hundred eighty thousand, seven hundred seventy-seven".