13401937 has 2 divisors, whose sum is σ = 13401938. Its totient is φ = 13401936.

The previous prime is 13401931. The next prime is 13401989. The reversal of 13401937 is 73910431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13278736 + 123201 = 3644^2 + 351^2 .

It is a cyclic number.

It is not a de Polignac number, because 13401937 - 2¹¹ = 13399889 is a prime.

It is a super-2 number, since 2×13401937² = 359223830703938, which contains 22 as substring.

It is equal to p₈₇₃₇₂₁ and since 13401937 and 873721 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13401931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6700968 + 6700969.

It is an arithmetic number, because the mean of its divisors is an integer number (6700969).

Almost surely, 2^13401937 is an apocalyptic number.

It is an amenable number.

13401937 is a deficient number, since it is larger than the sum of its proper divisors (1).

13401937 is an equidigital number, since it uses as much as digits as its factorization.

13401937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 13401937 is about 3660.8656080222. The cubic root of 13401937 is about 237.5322179746.

The spelling of 13401937 in words is "thirteen million, four hundred one thousand, nine hundred thirty-seven".