440252947 has 4 divisors (see below), whose sum is σ = 440595256. Its totient is φ = 439910640.

The previous prime is 440252941. The next prime is 440252987. The reversal of 440252947 is 749252044.

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

It is a cyclic number.

It is not a de Polignac number, because 440252947 - 2¹⁹ = 439728659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440252941) 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, 169218 + ... + 171799.

It is an arithmetic number, because the mean of its divisors is an integer number (110148814).

Almost surely, 2^440252947 is an apocalyptic number.

440252947 is a deficient number, since it is larger than the sum of its proper divisors (342309).

440252947 is a wasteful number, since it uses less digits than its factorization.

440252947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342308.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 440252947 is about 20982.2054846482. The cubic root of 440252947 is about 760.7362135372.

The spelling of 440252947 in words is "four hundred forty million, two hundred fifty-two thousand, nine hundred forty-seven".