44135988 has 48 divisors (see below), whose sum is σ = 115737216. Its totient is φ = 12988800.

The previous prime is 44135983. The next prime is 44135989. The reversal of 44135988 is 88953144.

It is a super-2 number, since 2×44135988² = 3895970873472288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44135983) 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, 2563 + ... + 9738.

It is an arithmetic number, because the mean of its divisors is an integer number (2411192).

Almost surely, 2^44135988 is an apocalyptic number.

It is an amenable number.

44135988 is an abundant number, since it is smaller than the sum of its proper divisors (71601228).

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

44135988 is a wasteful number, since it uses less digits than its factorization.

44135988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12344 (or 12342 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 44135988 is about 6643.4921539805. The cubic root of 44135988 is about 353.3981602504.

It can be divided in two parts, 4413 and 5988, that added together give a palindrome (10401).

The spelling of 44135988 in words is "forty-four million, one hundred thirty-five thousand, nine hundred eighty-eight".