13989490 has 32 divisors (see below), whose sum is σ = 25945920. Its totient is φ = 5428800.

The previous prime is 13989473. The next prime is 13989523. The reversal of 13989490 is 9498931.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77200 + ... + 77380.

It is an arithmetic number, because the mean of its divisors is an integer number (810810).

Almost surely, 2^13989490 is an apocalyptic number.

13989490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13989490 is a deficient number, since it is larger than the sum of its proper divisors (11956430).

13989490 is a wasteful number, since it uses less digits than its factorization.

13989490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 13989490 is about 3740.2526652621. The cubic root of 13989490 is about 240.9539003782.

The spelling of 13989490 in words is "thirteen million, nine hundred eighty-nine thousand, four hundred ninety".