999440597 has 16 divisors (see below), whose sum is σ = 1054801920. Its totient is φ = 945130032.

The previous prime is 999440581. The next prime is 999440609. The reversal of 999440597 is 795044999.

It is a cyclic number.

It is not a de Polignac number, because 999440597 - 2⁴ = 999440581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999440797) 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, 1352054 + ... + 1352792.

It is an arithmetic number, because the mean of its divisors is an integer number (65925120).

Almost surely, 2^999440597 is an apocalyptic number.

It is an amenable number.

999440597 is a deficient number, since it is larger than the sum of its proper divisors (55361323).

999440597 is a wasteful number, since it uses less digits than its factorization.

999440597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352.

The product of its (nonzero) digits is 3674160, while the sum is 56.

The square root of 999440597 is about 31613.9304263168. The cubic root of 999440597 is about 999.8134975523.

The spelling of 999440597 in words is "nine hundred ninety-nine million, four hundred forty thousand, five hundred ninety-seven".