44451994 has 4 divisors (see below), whose sum is σ = 66677994. Its totient is φ = 22225996.

The previous prime is 44451977. The next prime is 44452007. The reversal of 44451994 is 49915444.

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

It can be written as a sum of positive squares in only one way, i.e., 30858025 + 13593969 = 5555^2 + 3687^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 11112997 + ... + 11113000.

Almost surely, 2^44451994 is an apocalyptic number.

44451994 is a deficient number, since it is larger than the sum of its proper divisors (22226000).

44451994 is a wasteful number, since it uses less digits than its factorization.

44451994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22225999.

The product of its digits is 103680, while the sum is 40.

The square root of 44451994 is about 6667.2328592903. The cubic root of 44451994 is about 354.2395784251.

The spelling of 44451994 in words is "forty-four million, four hundred fifty-one thousand, nine hundred ninety-four".