13939377 has 4 divisors (see below), whose sum is σ = 18585840. Its totient is φ = 9292916.

The previous prime is 13939363. The next prime is 13939381. The reversal of 13939377 is 77393931.

13939377 is digitally balanced in base 2 and base 4, because in such bases 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 13939377 - 2⁴ = 13939361 is a prime.

It is a super-2 number, since 2×13939377² = 388612462296258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13939327) 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, 2323227 + ... + 2323232.

It is an arithmetic number, because the mean of its divisors is an integer number (4646460).

Almost surely, 2^13939377 is an apocalyptic number.

It is an amenable number.

13939377 is a deficient number, since it is larger than the sum of its proper divisors (4646463).

13939377 is an equidigital number, since it uses as much as digits as its factorization.

13939377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4646462.

The product of its digits is 107163, while the sum is 42.

The square root of 13939377 is about 3733.5475087375. The cubic root of 13939377 is about 240.6658419907.

The spelling of 13939377 in words is "thirteen million, nine hundred thirty-nine thousand, three hundred seventy-seven".