44977218 has 128 divisors (see below), whose sum is σ = 116121600. Its totient is φ = 11404800.

The previous prime is 44977211. The next prime is 44977241. The reversal of 44977218 is 81277944.

It is a happy number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

Its product of digits (112896) is a multiple of the sum of its prime divisors (168).

It is a self number, because there is not a number n which added to its sum of digits gives 44977218.

It is not an unprimeable number, because it can be changed into a prime (44977211) 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 63 ways as a sum of consecutive naturals, for example, 505318 + ... + 505406.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^44977218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44977218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58060800).

44977218 is an abundant number, since it is smaller than the sum of its proper divisors (71144382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44977218 is a wasteful number, since it uses less digits than its factorization.

44977218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168.

The product of its digits is 112896, while the sum is 42.

The square root of 44977218 is about 6706.5056475038. The cubic root of 44977218 is about 355.6292957661.

The spelling of 44977218 in words is "forty-four million, nine hundred seventy-seven thousand, two hundred eighteen".