13989497 has 8 divisors (see below), whose sum is σ = 14641344. Its totient is φ = 13341328.

The previous prime is 13989473. The next prime is 13989523. The reversal of 13989497 is 79498931.

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

It is a cyclic number.

It is not a de Polignac number, because 13989497 - 2⁶ = 13989433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13989407) 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, 9503 + ... + 10875.

It is an arithmetic number, because the mean of its divisors is an integer number (1830168).

Almost surely, 2^13989497 is an apocalyptic number.

It is an amenable number.

13989497 is a deficient number, since it is larger than the sum of its proper divisors (651847).

13989497 is a wasteful number, since it uses less digits than its factorization.

13989497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839.

The product of its digits is 489888, while the sum is 50.

The square root of 13989497 is about 3740.2536010276. The cubic root of 13989497 is about 240.9539405673.

The spelling of 13989497 in words is "thirteen million, nine hundred eighty-nine thousand, four hundred ninety-seven".