13995977 has 2 divisors, whose sum is σ = 13995978. Its totient is φ = 13995976.

The previous prime is 13995959. The next prime is 13995991. The reversal of 13995977 is 77959931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12243001 + 1752976 = 3499^2 + 1324^2 .

It is a cyclic number.

It is not a de Polignac number, because 13995977 - 2⁸ = 13995721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13995997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6997988 + 6997989.

It is an arithmetic number, because the mean of its divisors is an integer number (6997989).

Almost surely, 2^13995977 is an apocalyptic number.

It is an amenable number.

13995977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13995977 is an equidigital number, since it uses as much as digits as its factorization.

13995977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 535815, while the sum is 50.

The square root of 13995977 is about 3741.1197521598. The cubic root of 13995977 is about 240.9911384861.

The spelling of 13995977 in words is "thirteen million, nine hundred ninety-five thousand, nine hundred seventy-seven".