440645022 has 96 divisors (see below), whose sum is σ = 1026514944. Its totient is φ = 141588000.

The previous prime is 440645003. The next prime is 440645039. The reversal of 440645022 is 220546044.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2306947 + ... + 2307137.

It is an arithmetic number, because the mean of its divisors is an integer number (10692864).

Almost surely, 2^440645022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440645022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513257472).

440645022 is an abundant number, since it is smaller than the sum of its proper divisors (585869922).

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

440645022 is a wasteful number, since it uses less digits than its factorization.

440645022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 440645022 is about 20991.5464413654. The cubic root of 440645022 is about 760.9619755337.

The spelling of 440645022 in words is "four hundred forty million, six hundred forty-five thousand, twenty-two".