45449988 has 24 divisors (see below), whose sum is σ = 106185408. Its totient is φ = 15130656.

The previous prime is 45449983. The next prime is 45450007. The reversal of 45449988 is 88994454.

It is a self number, because there is not a number n which added to its sum of digits gives 45449988.

It is not an unprimeable number, because it can be changed into a prime (45449981) 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, 9870 + ... + 13722.

It is an arithmetic number, because the mean of its divisors is an integer number (4424392).

Almost surely, 2^45449988 is an apocalyptic number.

It is an amenable number.

45449988 is an abundant number, since it is smaller than the sum of its proper divisors (60735420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45449988 is a wasteful number, since it uses less digits than its factorization.

45449988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843 (or 4841 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The square root of 45449988 is about 6741.6606262849. The cubic root of 45449988 is about 356.8709998499.

The spelling of 45449988 in words is "forty-five million, four hundred forty-nine thousand, nine hundred eighty-eight".