999959896 has 32 divisors (see below), whose sum is σ = 2037697200. Its totient is φ = 457280640.

The previous prime is 999959879. The next prime is 999959897. The reversal of 999959896 is 698959999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999959897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32770 + ... + 55441.

Almost surely, 2^999959896 is an apocalyptic number.

It is an amenable number.

999959896 is an abundant number, since it is smaller than the sum of its proper divisors (1037737304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999959896 is a wasteful number, since it uses less digits than its factorization.

999959896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88339 (or 88335 counting only the distinct ones).

The product of its digits is 127545840, while the sum is 73.

The square root of 999959896 is about 31622.1424954098. The cubic root of 999959896 is about 999.9866318213.

The spelling of 999959896 in words is "nine hundred ninety-nine million, nine hundred fifty-nine thousand, eight hundred ninety-six".