440064923 has 2 divisors, whose sum is σ = 440064924. Its totient is φ = 440064922.

The previous prime is 440064917. The next prime is 440064943. The reversal of 440064923 is 329460044.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 440064923 - 2¹⁶ = 439999387 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440064923.

It is not a weakly prime, because it can be changed into another prime (440064913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220032461 + 220032462.

It is an arithmetic number, because the mean of its divisors is an integer number (220032462).

Almost surely, 2^440064923 is an apocalyptic number.

440064923 is a deficient number, since it is larger than the sum of its proper divisors (1).

440064923 is an equidigital number, since it uses as much as digits as its factorization.

440064923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 440064923 is about 20977.7244476135. The cubic root of 440064923 is about 760.6278992644.

The spelling of 440064923 in words is "four hundred forty million, sixty-four thousand, nine hundred twenty-three".