13779377 has 2 divisors, whose sum is σ = 13779378. Its totient is φ = 13779376.

The previous prime is 13779347. The next prime is 13779383. The reversal of 13779377 is 77397731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13075456 + 703921 = 3616^2 + 839^2 .

It is a cyclic number.

It is not a de Polignac number, because 13779377 - 2⁸ = 13779121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13779347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6889688 + 6889689.

It is an arithmetic number, because the mean of its divisors is an integer number (6889689).

Almost surely, 2^13779377 is an apocalyptic number.

It is an amenable number.

13779377 is a deficient number, since it is larger than the sum of its proper divisors (1).

13779377 is an equidigital number, since it uses as much as digits as its factorization.

13779377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194481, while the sum is 44.

The square root of 13779377 is about 3712.0583238952. The cubic root of 13779377 is about 239.7414866916.

The spelling of 13779377 in words is "thirteen million, seven hundred seventy-nine thousand, three hundred seventy-seven".