440489457 has 12 divisors (see below), whose sum is σ = 647047440. Its totient is φ = 288682008.

The previous prime is 440489443. The next prime is 440489459. The reversal of 440489457 is 754984044.

It is not a de Polignac number, because 440489457 - 2¹⁴ = 440473073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440489459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 414243 + ... + 415304.

It is an arithmetic number, because the mean of its divisors is an integer number (53920620).

Almost surely, 2^440489457 is an apocalyptic number.

It is an amenable number.

440489457 is a deficient number, since it is larger than the sum of its proper divisors (206557983).

440489457 is a wasteful number, since it uses less digits than its factorization.

440489457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829612 (or 829609 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 440489457 is about 20987.8406940781. The cubic root of 440489457 is about 760.8724151715.

The spelling of 440489457 in words is "four hundred forty million, four hundred eighty-nine thousand, four hundred fifty-seven".