4520989 has 4 divisors (see below), whose sum is σ = 4932000. Its totient is φ = 4109980.

The previous prime is 4520983. The next prime is 4521001. The reversal of 4520989 is 9890254.

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 not a de Polignac number, because 4520989 - 2¹³ = 4512797 is a prime.

It is a Duffinian number.

4520989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4520983) 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, 205489 + ... + 205510.

It is an arithmetic number, because the mean of its divisors is an integer number (1233000).

Almost surely, 2^4520989 is an apocalyptic number.

It is an amenable number.

4520989 is a deficient number, since it is larger than the sum of its proper divisors (411011).

4520989 is a wasteful number, since it uses less digits than its factorization.

4520989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411010.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 4520989 is about 2126.2617430599. The cubic root of 4520989 is about 165.3526464424.

The spelling of 4520989 in words is "four million, five hundred twenty thousand, nine hundred eighty-nine".