13990197 has 8 divisors (see below), whose sum is σ = 20088544. Its totient is φ = 8609328.

The previous prime is 13990183. The next prime is 13990199. The reversal of 13990197 is 79109931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13990197 - 2¹⁵ = 13957429 is a prime.

It is a super-2 number, since 2×13990197² = 391451224197618, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 358723 = 13990197 / (1 + 3 + 9 + 9 + 0 + 1 + 9 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13990199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179323 + ... + 179400.

It is an arithmetic number, because the mean of its divisors is an integer number (2511068).

Almost surely, 2^13990197 is an apocalyptic number.

It is an amenable number.

13990197 is a deficient number, since it is larger than the sum of its proper divisors (6098347).

13990197 is a wasteful number, since it uses less digits than its factorization.

13990197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358739.

The product of its (nonzero) digits is 15309, while the sum is 39.

The square root of 13990197 is about 3740.3471763995. The cubic root of 13990197 is about 240.9579594144.

The spelling of 13990197 in words is "thirteen million, nine hundred ninety thousand, one hundred ninety-seven".