45444490 has 32 divisors (see below), whose sum is σ = 100679040. Its totient is φ = 14382144.

The previous prime is 45444461. The next prime is 45444499. The reversal of 45444490 is 9444454.

It is not an unprimeable number, because it can be changed into a prime (45444499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24060 + ... + 25879.

It is an arithmetic number, because the mean of its divisors is an integer number (3146220).

Almost surely, 2^45444490 is an apocalyptic number.

45444490 is an abundant number, since it is smaller than the sum of its proper divisors (55234550).

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

45444490 is a wasteful number, since it uses less digits than its factorization.

45444490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49966.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 45444490 is about 6741.2528509173. The cubic root of 45444490 is about 356.8566092639.

It can be divided in two parts, 454 and 44490, that added together give a palindrome (44944).

The spelling of 45444490 in words is "forty-five million, four hundred forty-four thousand, four hundred ninety".