13901897 has 4 divisors (see below), whose sum is σ = 14109456. Its totient is φ = 13694340.

The previous prime is 13901891. The next prime is 13901929. The reversal of 13901897 is 79810931.

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: 79810931 = 313 ⋅254987.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13901897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13901897.

It is not an unprimeable number, because it can be changed into a prime (13901891) 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, 103679 + ... + 103812.

It is an arithmetic number, because the mean of its divisors is an integer number (3527364).

Almost surely, 2^13901897 is an apocalyptic number.

It is an amenable number.

13901897 is a deficient number, since it is larger than the sum of its proper divisors (207559).

13901897 is an equidigital number, since it uses as much as digits as its factorization.

13901897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207558.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 13901897 is about 3728.5247752965. The cubic root of 13901897 is about 240.4499487391.

The spelling of 13901897 in words is "thirteen million, nine hundred one thousand, eight hundred ninety-seven".