45509889 has 8 divisors (see below), whose sum is σ = 62320000. Its totient is φ = 29519856.

The previous prime is 45509873. The next prime is 45509897. The reversal of 45509889 is 98890554.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45509889 - 2⁴ = 45509873 is a prime.

It is a super-2 number, since 2×45509889² = 4142299993584642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45509869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204889 + ... + 205110.

It is an arithmetic number, because the mean of its divisors is an integer number (7790000).

Almost surely, 2^45509889 is an apocalyptic number.

It is an amenable number.

45509889 is a deficient number, since it is larger than the sum of its proper divisors (16810111).

45509889 is a wasteful number, since it uses less digits than its factorization.

45509889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410039.

The product of its (nonzero) digits is 518400, while the sum is 48.

The square root of 45509889 is about 6746.1017632408. The cubic root of 45509889 is about 357.0277108950.

The spelling of 45509889 in words is "forty-five million, five hundred nine thousand, eight hundred eighty-nine".