13945489 has 4 divisors (see below), whose sum is σ = 14055424. Its totient is φ = 13835556.

The previous prime is 13945471. The next prime is 13945493. The reversal of 13945489 is 98454931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13945489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13945469) 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 3 ways as a sum of consecutive naturals, for example, 54777 + ... + 55030.

It is an arithmetic number, because the mean of its divisors is an integer number (3513856).

Almost surely, 2^13945489 is an apocalyptic number.

It is an amenable number.

13945489 is a deficient number, since it is larger than the sum of its proper divisors (109935).

13945489 is a wasteful number, since it uses less digits than its factorization.

13945489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109934.

The product of its digits is 155520, while the sum is 43.

The square root of 13945489 is about 3734.3659435037. The cubic root of 13945489 is about 240.7010117761.

The spelling of 13945489 in words is "thirteen million, nine hundred forty-five thousand, four hundred eighty-nine".