13402937 has 2 divisors, whose sum is σ = 13402938. Its totient is φ = 13402936.

The previous prime is 13402913. The next prime is 13402957. The reversal of 13402937 is 73920431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13402921 + 16 = 3661^2 + 4^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13402937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13402957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6701468 + 6701469.

It is an arithmetic number, because the mean of its divisors is an integer number (6701469).

Almost surely, 2^13402937 is an apocalyptic number.

It is an amenable number.

13402937 is a deficient number, since it is larger than the sum of its proper divisors (1).

13402937 is an equidigital number, since it uses as much as digits as its factorization.

13402937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 13402937 is about 3661.0021851946. The cubic root of 13402937 is about 237.5381257353.

The spelling of 13402937 in words is "thirteen million, four hundred two thousand, nine hundred thirty-seven".