13904797 has 2 divisors, whose sum is σ = 13904798. Its totient is φ = 13904796.

The previous prime is 13904791. The next prime is 13904831. The reversal of 13904797 is 79740931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10686361 + 3218436 = 3269^2 + 1794^2 .

It is a cyclic number.

It is not a de Polignac number, because 13904797 - 2⁷ = 13904669 is a prime.

It is a super-2 number, since 2×13904797² = 386686759222418, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13904791) 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, 6952398 + 6952399.

It is an arithmetic number, because the mean of its divisors is an integer number (6952399).

Almost surely, 2^13904797 is an apocalyptic number.

It is an amenable number.

13904797 is a deficient number, since it is larger than the sum of its proper divisors (1).

13904797 is an equidigital number, since it uses as much as digits as its factorization.

13904797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 13904797 is about 3728.9136487723. The cubic root of 13904797 is about 240.4666672337.

The spelling of 13904797 in words is "thirteen million, nine hundred four thousand, seven hundred ninety-seven".