440220979 has 4 divisors (see below), whose sum is σ = 480241080. Its totient is φ = 400200880.

The previous prime is 440220973. The next prime is 440221003. The reversal of 440220979 is 979022044.

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

It is a cyclic number.

It is not a de Polignac number, because 440220979 - 2²⁷ = 306003251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440220973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20010034 + ... + 20010055.

It is an arithmetic number, because the mean of its divisors is an integer number (120060270).

Almost surely, 2^440220979 is an apocalyptic number.

440220979 is a deficient number, since it is larger than the sum of its proper divisors (40020101).

440220979 is a wasteful number, since it uses less digits than its factorization.

440220979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40020100.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 440220979 is about 20981.4436824543. The cubic root of 440220979 is about 760.7178000289.

The spelling of 440220979 in words is "four hundred forty million, two hundred twenty thousand, nine hundred seventy-nine".