13952989 has 4 divisors (see below), whose sum is σ = 13963324. Its totient is φ = 13942656.

The previous prime is 13952947. The next prime is 13952999. The reversal of 13952989 is 98925931.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3980025 + 9972964 = 1995^2 + 3158^2 .

It is a cyclic number.

It is not a de Polignac number, because 13952989 - 2²³ = 5564381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13952909) 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, 2772 + ... + 5965.

It is an arithmetic number, because the mean of its divisors is an integer number (3490831).

Almost surely, 2^13952989 is an apocalyptic number.

It is an amenable number.

13952989 is a deficient number, since it is larger than the sum of its proper divisors (10335).

13952989 is an equidigital number, since it uses as much as digits as its factorization.

13952989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10334.

The product of its digits is 174960, while the sum is 46.

The square root of 13952989 is about 3735.3699950607. The cubic root of 13952989 is about 240.7441543784.

It can be divided in two parts, 13952 and 989, that added together give a palindrome (14941).

The spelling of 13952989 in words is "thirteen million, nine hundred fifty-two thousand, nine hundred eighty-nine".