44691993 has 10 divisors (see below), whose sum is σ = 66762234. Its totient is φ = 29794608.

The previous prime is 44691979. The next prime is 44692057. The reversal of 44691993 is 39919644.

44691993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 37785609 + 6906384 = 6147^2 + 2628^2 .

It is not a de Polignac number, because 44691993 - 2⁵ = 44691961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44691943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 275796 + ... + 275957.

Almost surely, 2^44691993 is an apocalyptic number.

It is an amenable number.

44691993 is a deficient number, since it is larger than the sum of its proper divisors (22070241).

44691993 is an equidigital number, since it uses as much as digits as its factorization.

44691993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551765 (or 551756 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 44691993 is about 6685.2070274600. The cubic root of 44691993 is about 354.8759548093.

The spelling of 44691993 in words is "forty-four million, six hundred ninety-one thousand, nine hundred ninety-three".