13400997 has 16 divisors (see below), whose sum is σ = 18429120. Its totient is φ = 8657792.

The previous prime is 13400971. The next prime is 13401041. The reversal of 13400997 is 79900431.

It is a cyclic number.

It is not a de Polignac number, because 13400997 - 2⁸ = 13400741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13678 + ... + 14624.

It is an arithmetic number, because the mean of its divisors is an integer number (1151820).

Almost surely, 2^13400997 is an apocalyptic number.

It is an amenable number.

13400997 is a deficient number, since it is larger than the sum of its proper divisors (5028123).

13400997 is an equidigital number, since it uses as much as digits as its factorization.

13400997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 13400997 is about 3660.7372208341. The cubic root of 13400997 is about 237.5266644116.

The spelling of 13400997 in words is "thirteen million, four hundred thousand, nine hundred ninety-seven".