440525997 has 12 divisors (see below), whose sum is σ = 638122524. Its totient is φ = 292849920.

The previous prime is 440525941. The next prime is 440526113. The reversal of 440525997 is 799525044.

440525997 is a `hidden beast` number, since 4 + 4 + 0 + 52 + 599 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 310429161 + 130096836 = 17619^2 + 11406^2 .

It is not a de Polignac number, because 440525997 - 2⁶ = 440525933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440525797) 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, 66154 + ... + 72507.

It is an arithmetic number, because the mean of its divisors is an integer number (53176877).

Almost surely, 2^440525997 is an apocalyptic number.

It is an amenable number.

440525997 is a deficient number, since it is larger than the sum of its proper divisors (197596527).

440525997 is a wasteful number, since it uses less digits than its factorization.

440525997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139020 (or 139017 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 440525997 is about 20988.7111800606. The cubic root of 440525997 is about 760.8934535179.

The spelling of 440525997 in words is "four hundred forty million, five hundred twenty-five thousand, nine hundred ninety-seven".