45164989 has 4 divisors (see below), whose sum is σ = 45256000. Its totient is φ = 45073980.

The previous prime is 45164981. The next prime is 45164993. The reversal of 45164989 is 98946154.

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 not a de Polignac number, because 45164989 - 2³ = 45164981 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 (45164981) 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, 44757 + ... + 45754.

It is an arithmetic number, because the mean of its divisors is an integer number (11314000).

Almost surely, 2^45164989 is an apocalyptic number.

It is an amenable number.

45164989 is a deficient number, since it is larger than the sum of its proper divisors (91011).

45164989 is an equidigital number, since it uses as much as digits as its factorization.

45164989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91010.

The product of its digits is 311040, while the sum is 46.

The square root of 45164989 is about 6720.4902350945. The cubic root of 45164989 is about 356.1235026828.

The spelling of 45164989 in words is "forty-five million, one hundred sixty-four thousand, nine hundred eighty-nine".