44991693 has 14 divisors (see below), whose sum is σ = 67457774. Its totient is φ = 29993976.

The previous prime is 44991649. The next prime is 44991697. The reversal of 44991693 is 39619944.

44991693 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., 29452329 + 15539364 = 5427^2 + 3942^2 .

It is not a de Polignac number, because 44991693 - 2¹³ = 44983501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44991697) 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 13 ways as a sum of consecutive naturals, for example, 30130 + ... + 31587.

Almost surely, 2^44991693 is an apocalyptic number.

It is an amenable number.

44991693 is a deficient number, since it is larger than the sum of its proper divisors (22466081).

44991693 is an frugal number, since it uses more digits than its factorization.

44991693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61735 (or 61720 counting only the distinct ones).

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

The square root of 44991693 is about 6707.5847366992. The cubic root of 44991693 is about 355.6674423520.

The spelling of 44991693 in words is "forty-four million, nine hundred ninety-one thousand, six hundred ninety-three".