440231442 has 32 divisors (see below), whose sum is σ = 1008356352. Its totient is φ = 125516304.

The previous prime is 440231423. The next prime is 440231443. The reversal of 440231442 is 244132044.

It is a happy number.

It is a super-3 number, since 3×440231442³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (440231443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9693 + ... + 31215.

It is an arithmetic number, because the mean of its divisors is an integer number (31511136).

Almost surely, 2^440231442 is an apocalyptic number.

440231442 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

440231442 is an abundant number, since it is smaller than the sum of its proper divisors (568124910).

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

440231442 is a wasteful number, since it uses less digits than its factorization.

440231442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22022.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 440231442 is about 20981.6930203451. The cubic root of 440231442 is about 760.7238267955.

Adding to 440231442 its reverse (244132044), we get a palindrome (684363486).

The spelling of 440231442 in words is "four hundred forty million, two hundred thirty-one thousand, four hundred forty-two".