4457989 has 12 divisors (see below), whose sum is σ = 4814316. Its totient is φ = 4125888.

The previous prime is 4457987. The next prime is 4458001. The reversal of 4457989 is 9897544.

It can be written as a sum of positive squares in 2 ways, for example, as 2030625 + 2427364 = 1425^2 + 1558^2 .

It is not a de Polignac number, because 4457989 - 2¹ = 4457987 is a prime.

It is a Duffinian number.

Its product of digits (362880) is a multiple of the sum of its prime factors (324).

4457989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4457983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19017 + ... + 19249.

It is an arithmetic number, because the mean of its divisors is an integer number (401193).

Almost surely, 2^4457989 is an apocalyptic number.

It is an amenable number.

4457989 is a deficient number, since it is larger than the sum of its proper divisors (356327).

4457989 is a wasteful number, since it uses less digits than its factorization.

4457989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 305 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 4457989 is about 2111.3950364629. The cubic root of 4457989 is about 164.5809876430.

The spelling of 4457989 in words is "four million, four hundred fifty-seven thousand, nine hundred eighty-nine".