44451993 has 4 divisors (see below), whose sum is σ = 59269328. Its totient is φ = 29634660.

The previous prime is 44451977. The next prime is 44452007. The reversal of 44451993 is 39915444.

44451993 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 44451993 - 2⁴ = 44451977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (44451943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7408663 + ... + 7408668.

It is an arithmetic number, because the mean of its divisors is an integer number (14817332).

Almost surely, 2^44451993 is an apocalyptic number.

It is an amenable number.

44451993 is a deficient number, since it is larger than the sum of its proper divisors (14817335).

44451993 is a wasteful number, since it uses less digits than its factorization.

44451993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14817334.

The product of its digits is 77760, while the sum is 39.

The square root of 44451993 is about 6667.2327842966. The cubic root of 44451993 is about 354.2395757688.

The spelling of 44451993 in words is "forty-four million, four hundred fifty-one thousand, nine hundred ninety-three".