44312013989 has 4 divisors (see below), whose sum is σ = 45392794860. Its totient is φ = 43231233120.

The previous prime is 44312013973. The next prime is 44312014013. The reversal of 44312013989 is 98931021344.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15170109889 + 29141904100 = 123167^2 + 170710^2 .

It is not a de Polignac number, because 44312013989 - 2⁴ = 44312013973 is a prime.

It is a super-2 number, since 2×44312013989² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44312013919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540390374 + ... + 540390455.

It is an arithmetic number, because the mean of its divisors is an integer number (11348198715).

Almost surely, 2^44312013989 is an apocalyptic number.

It is an amenable number.

44312013989 is a deficient number, since it is larger than the sum of its proper divisors (1080780871).

44312013989 is a wasteful number, since it uses less digits than its factorization.

44312013989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080780870.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 44312013989 in words is "forty-four billion, three hundred twelve million, thirteen thousand, nine hundred eighty-nine".