899961 has 8 divisors (see below), whose sum is σ = 1238784. Its totient is φ = 580560.

The previous prime is 899939. The next prime is 899971. The reversal of 899961 is 169998.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 899961 - 2¹⁴ = 883577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (899971) 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, 4746 + ... + 4931.

It is an arithmetic number, because the mean of its divisors is an integer number (154848).

2⁸⁹⁹⁹⁶¹ is an apocalyptic number.

It is an amenable number.

899961 is a deficient number, since it is larger than the sum of its proper divisors (338823).

899961 is a wasteful number, since it uses less digits than its factorization.

899961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9711.

The product of its digits is 34992, while the sum is 42.

The square root of 899961 is about 948.6627430230. The cubic root of 899961 is about 96.5475438446.

The spelling of 899961 in words is "eight hundred ninety-nine thousand, nine hundred sixty-one".