900811 has 8 divisors (see below), whose sum is σ = 935424. Its totient is φ = 866880.

The previous prime is 900803. The next prime is 900817. The reversal of 900811 is 118009.

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

It is a cyclic number.

It is not a de Polignac number, because 900811 - 2³ = 900803 is a prime.

It is a super-2 number, since 2×900811² = 1622920915442, which contains 22 as substring.

It is a Duffinian number.

900811 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (900817) 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, 5121 + ... + 5293.

It is an arithmetic number, because the mean of its divisors is an integer number (116928).

2⁹⁰⁰⁸¹¹ is an apocalyptic number.

900811 is a deficient number, since it is larger than the sum of its proper divisors (34613).

900811 is a wasteful number, since it uses less digits than its factorization.

900811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 900811 is about 949.1106363328. The cubic root of 900811 is about 96.5779301945.

It can be divided in two parts, 900 and 811, that added together give a triangular number (1711 = T₅₈).

The spelling of 900811 in words is "nine hundred thousand, eight hundred eleven".