8999959 has 4 divisors (see below), whose sum is σ = 9012816. Its totient is φ = 8987104.

The previous prime is 8999957. The next prime is 8999971. The reversal of 8999959 is 9599998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9599998 = 2 ⋅4799999.

It is a cyclic number.

It is not a de Polignac number, because 8999959 - 2¹ = 8999957 is a prime.

It is a Duffinian number.

8999959 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8999957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5314 + ... + 6799.

It is an arithmetic number, because the mean of its divisors is an integer number (2253204).

Almost surely, 2^8999959 is an apocalyptic number.

8999959 is a deficient number, since it is larger than the sum of its proper divisors (12857).

8999959 is a wasteful number, since it uses less digits than its factorization.

8999959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12856.

The product of its digits is 2361960, while the sum is 58.

The square root of 8999959 is about 2999.9931666589. The cubic root of 8999959 is about 208.0080664401.

The spelling of 8999959 in words is "eight million, nine hundred ninety-nine thousand, nine hundred fifty-nine".