44040081 has 32 divisors (see below), whose sum is σ = 66908160. Its totient is φ = 25595136.

The previous prime is 44040077. The next prime is 44040089. The reversal of 44040081 is 18004044.

It is not a de Polignac number, because 44040081 - 2² = 44040077 is a prime.

It is a super-2 number, since 2×44040081² = 3879057468973122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44040089) 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, 45060 + ... + 46026.

It is an arithmetic number, because the mean of its divisors is an integer number (2090880).

Almost surely, 2^44040081 is an apocalyptic number.

It is an amenable number.

44040081 is a deficient number, since it is larger than the sum of its proper divisors (22868079).

44040081 is a wasteful number, since it uses less digits than its factorization.

44040081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 44040081 is about 6636.2701120434. The cubic root of 44040081 is about 353.1419978870.

The spelling of 44040081 in words is "forty-four million, forty thousand, eighty-one".