13990464 has 84 divisors (see below), whose sum is σ = 40654224. Its totient is φ = 4599552.

The previous prime is 13990451. The next prime is 13990469. The reversal of 13990464 is 46409931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (13990469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61519 + ... + 61745.

Almost surely, 2^13990464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13990464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20327112).

13990464 is an abundant number, since it is smaller than the sum of its proper divisors (26663760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13990464 is a wasteful number, since it uses less digits than its factorization.

13990464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 13990464 is about 3740.3828681032. The cubic root of 13990464 is about 240.9594922821.

The spelling of 13990464 in words is "thirteen million, nine hundred ninety thousand, four hundred sixty-four".