440394142 has 4 divisors (see below), whose sum is σ = 660591216. Its totient is φ = 220197070.

The previous prime is 440394139. The next prime is 440394167. The reversal of 440394142 is 241493044.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110098534 + ... + 110098537.

It is an arithmetic number, because the mean of its divisors is an integer number (165147804).

Almost surely, 2^440394142 is an apocalyptic number.

440394142 is a deficient number, since it is larger than the sum of its proper divisors (220197074).

440394142 is a wasteful number, since it uses less digits than its factorization.

440394142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220197073.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 440394142 is about 20985.5698516862. The cubic root of 440394142 is about 760.8175309326.

The spelling of 440394142 in words is "four hundred forty million, three hundred ninety-four thousand, one hundred forty-two".