890440811 has 16 divisors (see below), whose sum is σ = 968647680. Its totient is φ = 813659040.

The previous prime is 890440799. The next prime is 890440939. The reversal of 890440811 is 118044098.

It is a cyclic number.

It is not a de Polignac number, because 890440811 - 2¹⁴ = 890424427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (890440711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1031366 + ... + 1032228.

It is an arithmetic number, because the mean of its divisors is an integer number (60540480).

Almost surely, 2^890440811 is an apocalyptic number.

890440811 is a deficient number, since it is larger than the sum of its proper divisors (78206869).

890440811 is a wasteful number, since it uses less digits than its factorization.

890440811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 890440811 is about 29840.2548749169. The cubic root of 890440811 is about 962.0589529529.

The spelling of 890440811 in words is "eight hundred ninety million, four hundred forty thousand, eight hundred eleven".