899311 has 4 divisors (see below), whose sum is σ = 1027792. Its totient is φ = 770832.

The previous prime is 899309. The next prime is 899321. The reversal of 899311 is 113998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113998 = 2 ⋅56999.

It is a cyclic number.

It is not a de Polignac number, because 899311 - 2¹ = 899309 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 (899321) 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, 64230 + ... + 64243.

It is an arithmetic number, because the mean of its divisors is an integer number (256948).

2⁸⁹⁹³¹¹ is an apocalyptic number.

899311 is a deficient number, since it is larger than the sum of its proper divisors (128481).

899311 is a wasteful number, since it uses less digits than its factorization.

899311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128480.

The product of its digits is 1944, while the sum is 31.

The square root of 899311 is about 948.3200936393. The cubic root of 899311 is about 96.5242943119.

The spelling of 899311 in words is "eight hundred ninety-nine thousand, three hundred eleven".