44491778 has 4 divisors (see below), whose sum is σ = 66737670. Its totient is φ = 22245888.

The previous prime is 44491747. The next prime is 44491781. The reversal of 44491778 is 87719444.

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., 41692849 + 2798929 = 6457^2 + 1673^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11122943 + ... + 11122946.

Almost surely, 2^44491778 is an apocalyptic number.

44491778 is a deficient number, since it is larger than the sum of its proper divisors (22245892).

44491778 is a wasteful number, since it uses less digits than its factorization.

44491778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22245891.

The product of its digits is 225792, while the sum is 44.

The square root of 44491778 is about 6670.2157386399. The cubic root of 44491778 is about 354.3452269674.

The spelling of 44491778 in words is "forty-four million, four hundred ninety-one thousand, seven hundred seventy-eight".