13991074 has 16 divisors (see below), whose sum is σ = 21434688. Its totient is φ = 6847632.

The previous prime is 13991071. The next prime is 13991077. The reversal of 13991074 is 47019931.

It is an interprime number because it is at equal distance from previous prime (13991071) and next prime (13991077).

It is not an unprimeable number, because it can be changed into a prime (13991071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35044 + ... + 35440.

It is an arithmetic number, because the mean of its divisors is an integer number (1339668).

Almost surely, 2^13991074 is an apocalyptic number.

13991074 is a deficient number, since it is larger than the sum of its proper divisors (7443614).

13991074 is a wasteful number, since it uses less digits than its factorization.

13991074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 13991074 is about 3740.4644096689. The cubic root of 13991074 is about 240.9629942664.

The spelling of 13991074 in words is "thirteen million, nine hundred ninety-one thousand, seventy-four".