13442977 has 2 divisors, whose sum is σ = 13442978. Its totient is φ = 13442976.

The previous prime is 13442969. The next prime is 13442983. The reversal of 13442977 is 77924431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7639696 + 5803281 = 2764^2 + 2409^2 .

It is a cyclic number.

It is not a de Polignac number, because 13442977 - 2³ = 13442969 is a prime.

It is not a weakly prime, because it can be changed into another prime (13442677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6721488 + 6721489.

It is an arithmetic number, because the mean of its divisors is an integer number (6721489).

Almost surely, 2^13442977 is an apocalyptic number.

It is an amenable number.

13442977 is a deficient number, since it is larger than the sum of its proper divisors (1).

13442977 is an equidigital number, since it uses as much as digits as its factorization.

13442977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 13442977 is about 3666.4665551454. The cubic root of 13442977 is about 237.7744314333.

The spelling of 13442977 in words is "thirteen million, four hundred forty-two thousand, nine hundred seventy-seven".