13990658 has 8 divisors (see below), whose sum is σ = 22893840. Its totient is φ = 6359380.

The previous prime is 13990657. The next prime is 13990667. The reversal of 13990658 is 85609931.

13990658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×13990658² = 391477022545928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13990657) 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, 317948 + ... + 317991.

It is an arithmetic number, because the mean of its divisors is an integer number (2861730).

Almost surely, 2^13990658 is an apocalyptic number.

13990658 is a deficient number, since it is larger than the sum of its proper divisors (8903182).

13990658 is a wasteful number, since it uses less digits than its factorization.

13990658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635952.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 13990658 is about 3740.4088011874. The cubic root of 13990658 is about 240.9606060390.

The spelling of 13990658 in words is "thirteen million, nine hundred ninety thousand, six hundred fifty-eight".