44640397238 has 16 divisors (see below), whose sum is σ = 68345274096. Its totient is φ = 21860136480.

The previous prime is 44640397171. The next prime is 44640397253. The reversal of 44640397238 is 83279304644.

It is a super-3 number, since 3×44640397238³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314333 + ... + 433688.

It is an arithmetic number, because the mean of its divisors is an integer number (4271579631).

Almost surely, 2^44640397238 is an apocalyptic number.

44640397238 is a deficient number, since it is larger than the sum of its proper divisors (23704876858).

44640397238 is a wasteful number, since it uses less digits than its factorization.

44640397238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748639.

The product of its (nonzero) digits is 3483648, while the sum is 50.

The spelling of 44640397238 in words is "forty-four billion, six hundred forty million, three hundred ninety-seven thousand, two hundred thirty-eight".