14990991 has 8 divisors (see below), whose sum is σ = 21163824. Its totient is φ = 9406080.

The previous prime is 14990977. The next prime is 14991013. The reversal of 14990991 is 19909941.

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

It is not a de Polignac number, because 14990991 - 2⁵ = 14990959 is a prime.

It is a super-2 number, since 2×14990991² = 449459622324162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14990491) 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, 146920 + ... + 147021.

It is an arithmetic number, because the mean of its divisors is an integer number (2645478).

Almost surely, 2^14990991 is an apocalyptic number.

14990991 is a deficient number, since it is larger than the sum of its proper divisors (6172833).

14990991 is a wasteful number, since it uses less digits than its factorization.

14990991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293961.

The product of its (nonzero) digits is 26244, while the sum is 42.

The square root of 14990991 is about 3871.8201146231. The cubic root of 14990991 is about 246.5718239794.

The spelling of 14990991 in words is "fourteen million, nine hundred ninety thousand, nine hundred ninety-one".