13930777 has 4 divisors (see below), whose sum is σ = 15920896. Its totient is φ = 11940660.

The previous prime is 13930747. The next prime is 13930789. The reversal of 13930777 is 77703931.

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, and also an emirpimes, since its reverse is a distinct semiprime: 77703931 = 167 ⋅465293.

It is a cyclic number.

It is not a de Polignac number, because 13930777 - 2⁷ = 13930649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13930717) 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, 995049 + ... + 995062.

It is an arithmetic number, because the mean of its divisors is an integer number (3980224).

Almost surely, 2^13930777 is an apocalyptic number.

It is an amenable number.

13930777 is a deficient number, since it is larger than the sum of its proper divisors (1990119).

13930777 is an equidigital number, since it uses as much as digits as its factorization.

13930777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990118.

The product of its (nonzero) digits is 27783, while the sum is 37.

The square root of 13930777 is about 3732.3956114003. The cubic root of 13930777 is about 240.6163382951.

The spelling of 13930777 in words is "thirteen million, nine hundred thirty thousand, seven hundred seventy-seven".