890765479091 has 4 divisors (see below), whose sum is σ = 890778846432. Its totient is φ = 890752111752.

The previous prime is 890765479063. The next prime is 890765479099. The reversal of 890765479091 is 190974567098.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 890765479091 - 2¹⁴ = 890765462707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (890765479099) 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, 6583211 + ... + 6717156.

It is an arithmetic number, because the mean of its divisors is an integer number (222694711608).

Almost surely, 2^890765479091 is an apocalyptic number.

890765479091 is a deficient number, since it is larger than the sum of its proper divisors (13367341).

890765479091 is a wasteful number, since it uses less digits than its factorization.

890765479091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13367340.

The product of its (nonzero) digits is 34292160, while the sum is 65.

The spelling of 890765479091 in words is "eight hundred ninety billion, seven hundred sixty-five million, four hundred seventy-nine thousand, ninety-one".