45989944 has 64 divisors (see below), whose sum is σ = 115799040. Its totient is φ = 16536960.

The previous prime is 45989917. The next prime is 45989953. The reversal of 45989944 is 44998954.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 45989891 and 45989900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5137 + ... + 10879.

It is an arithmetic number, because the mean of its divisors is an integer number (1809360).

Almost surely, 2^45989944 is an apocalyptic number.

45989944 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45989944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57899520).

45989944 is an abundant number, since it is smaller than the sum of its proper divisors (69809096).

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

45989944 is a wasteful number, since it uses less digits than its factorization.

45989944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5780 (or 5776 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 52.

The square root of 45989944 is about 6781.5886044496. The cubic root of 45989944 is about 358.2786756847.

It can be divided in two parts, 45 and 989944, that added together give a palindrome (989989).

The spelling of 45989944 in words is "forty-five million, nine hundred eighty-nine thousand, nine hundred forty-four".