440468457 has 16 divisors (see below), whose sum is σ = 689965248. Its totient is φ = 246415680.

The previous prime is 440468383. The next prime is 440468459. The reversal of 440468457 is 754864044.

It is not a de Polignac number, because 440468457 - 2²³ = 432079849 is a prime.

It is a super-2 number, since 2×440468457² = 388024923223921698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (440468459) 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, 512938 + ... + 513795.

It is an arithmetic number, because the mean of its divisors is an integer number (43122828).

Almost surely, 2^440468457 is an apocalyptic number.

It is an amenable number.

440468457 is a deficient number, since it is larger than the sum of its proper divisors (249496791).

440468457 is a wasteful number, since it uses less digits than its factorization.

440468457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026760.

The product of its (nonzero) digits is 430080, while the sum is 42.

The square root of 440468457 is about 20987.3403984402. The cubic root of 440468457 is about 760.8603236414.

The spelling of 440468457 in words is "four hundred forty million, four hundred sixty-eight thousand, four hundred fifty-seven".