45089919 has 32 divisors (see below), whose sum is σ = 77614080. Its totient is φ = 25336800.

The previous prime is 45089911. The next prime is 45089923. The reversal of 45089919 is 91998054.

It is not a de Polignac number, because 45089919 - 2³ = 45089911 is a prime.

It is a super-2 number, since 2×45089919² = 4066201590853122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45089911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9574 + ... + 13484.

It is an arithmetic number, because the mean of its divisors is an integer number (2425440).

Almost surely, 2^45089919 is an apocalyptic number.

45089919 is a deficient number, since it is larger than the sum of its proper divisors (32524161).

45089919 is a wasteful number, since it uses less digits than its factorization.

45089919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988 (or 3982 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 45089919 is about 6714.9027543219. The cubic root of 45089919 is about 355.9260856309.

The spelling of 45089919 in words is "forty-five million, eighty-nine thousand, nine hundred nineteen".