13897418 has 8 divisors (see below), whose sum is σ = 21030948. Its totient is φ = 6887104.

The previous prime is 13897369. The next prime is 13897421. The reversal of 13897418 is 81479831.

It can be written as a sum of positive squares in 2 ways, for example, as 13890529 + 6889 = 3727^2 + 83^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30521 + ... + 30972.

Almost surely, 2^13897418 is an apocalyptic number.

13897418 is a deficient number, since it is larger than the sum of its proper divisors (7133530).

13897418 is a wasteful number, since it uses less digits than its factorization.

13897418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61608.

The product of its digits is 48384, while the sum is 41.

The square root of 13897418 is about 3727.9240872099. The cubic root of 13897418 is about 240.4241227433.

The spelling of 13897418 in words is "thirteen million, eight hundred ninety-seven thousand, four hundred eighteen".