944220816 has 480 divisors, whose sum is σ = 3535773696. Its totient is φ = 228096000.

The previous prime is 944220799. The next prime is 944220829. The reversal of 944220816 is 618022449.

944220816 is a `hidden beast` number, since 9 + 442 + 208 + 1 + 6 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 14092815 + ... + 14092881.

Almost surely, 2^944220816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 944220816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1767886848).

944220816 is an abundant number, since it is smaller than the sum of its proper divisors (2591552880).

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

944220816 is a wasteful number, since it uses less digits than its factorization.

944220816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 944220816 is about 30728.1762556778. The cubic root of 944220816 is about 981.0501085734.

The spelling of 944220816 in words is "nine hundred forty-four million, two hundred twenty thousand, eight hundred sixteen".