440031132 has 18 divisors (see below), whose sum is σ = 1112301008. Its totient is φ = 146677032.

The previous prime is 440031131. The next prime is 440031157. The reversal of 440031132 is 231130044.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440031131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6111508 + ... + 6111579.

Almost surely, 2^440031132 is an apocalyptic number.

It is an amenable number.

440031132 is an abundant number, since it is smaller than the sum of its proper divisors (672269876).

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

440031132 is a wasteful number, since it uses less digits than its factorization.

440031132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12223097 (or 12223092 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 440031132 is about 20976.9190302103. The cubic root of 440031132 is about 760.6084301407.

Adding to 440031132 its reverse (231130044), we get a palindrome (671161176).

The spelling of 440031132 in words is "four hundred forty million, thirty-one thousand, one hundred thirty-two".