13791497 has 4 divisors (see below), whose sum is σ = 14236416. Its totient is φ = 13346580.

The previous prime is 13791487. The next prime is 13791499. The reversal of 13791497 is 79419731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79419731 = 991 ⋅80141.

It is a cyclic number.

It is not a de Polignac number, because 13791497 - 2⁸ = 13791241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13791499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222413 + ... + 222474.

It is an arithmetic number, because the mean of its divisors is an integer number (3559104).

Almost surely, 2^13791497 is an apocalyptic number.

It is an amenable number.

13791497 is a deficient number, since it is larger than the sum of its proper divisors (444919).

13791497 is an equidigital number, since it uses as much as digits as its factorization.

13791497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444918.

The product of its digits is 47628, while the sum is 41.

The square root of 13791497 is about 3713.6904825254. The cubic root of 13791497 is about 239.8117563251.

The spelling of 13791497 in words is "thirteen million, seven hundred ninety-one thousand, four hundred ninety-seven".