13920877 has 2 divisors, whose sum is σ = 13920878. Its totient is φ = 13920876.

The previous prime is 13920859. The next prime is 13920887. The reversal of 13920877 is 77802931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7295401 + 6625476 = 2701^2 + 2574^2 .

It is a cyclic number.

It is not a de Polignac number, because 13920877 - 2¹⁵ = 13888109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13920887) 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, 6960438 + 6960439.

It is an arithmetic number, because the mean of its divisors is an integer number (6960439).

Almost surely, 2^13920877 is an apocalyptic number.

It is an amenable number.

13920877 is a deficient number, since it is larger than the sum of its proper divisors (1).

13920877 is an equidigital number, since it uses as much as digits as its factorization.

13920877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 13920877 is about 3731.0691497210. The cubic root of 13920877 is about 240.5593262500.

The spelling of 13920877 in words is "thirteen million, nine hundred twenty thousand, eight hundred seventy-seven".