899659 has 2 divisors, whose sum is σ = 899660. Its totient is φ = 899658.

The previous prime is 899617. The next prime is 899671. The reversal of 899659 is 956998.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 899659 - 2⁷ = 899531 is a prime.

It is not a weakly prime, because it can be changed into another prime (899159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449829 + 449830.

It is an arithmetic number, because the mean of its divisors is an integer number (449830).

2⁸⁹⁹⁶⁵⁹ is an apocalyptic number.

899659 is a deficient number, since it is larger than the sum of its proper divisors (1).

899659 is an equidigital number, since it uses as much as digits as its factorization.

899659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 46.

The square root of 899659 is about 948.5035582432. The cubic root of 899659 is about 96.5367431469.

The spelling of 899659 in words is "eight hundred ninety-nine thousand, six hundred fifty-nine".