440342986 has 8 divisors (see below), whose sum is σ = 667936260. Its totient is φ = 217697568.

The previous prime is 440342983. The next prime is 440343011. The reversal of 440342986 is 689243044.

It can be written as a sum of positive squares in 2 ways, for example, as 440202361 + 140625 = 20981^2 + 375^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (440342983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1236741 + ... + 1237096.

Almost surely, 2^440342986 is an apocalyptic number.

440342986 is a deficient number, since it is larger than the sum of its proper divisors (227593274).

440342986 is a wasteful number, since it uses less digits than its factorization.

440342986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473928.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 440342986 is about 20984.3509787651. The cubic root of 440342986 is about 760.7880710428.

The spelling of 440342986 in words is "four hundred forty million, three hundred forty-two thousand, nine hundred eighty-six".