440172988090 has 36 divisors (see below), whose sum is σ = 870933376782. Its totient is φ = 160054512640.

The previous prime is 440172988081. The next prime is 440172988091. The reversal of 440172988090 is 90889271044.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 77984472049 + 362188516041 = 279257^2 + 601821^2 .

It is not an unprimeable number, because it can be changed into a prime (440172988091) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23068794 + ... + 23087866.

Almost surely, 2^440172988090 is an apocalyptic number.

440172988090 is a deficient number, since it is larger than the sum of its proper divisors (430760388692).

440172988090 is an frugal number, since it uses more digits than its factorization.

440172988090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38175 (or 19091 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 440172988090 in words is "four hundred forty billion, one hundred seventy-two million, nine hundred eighty-eight thousand, ninety".