290044440091 has 16 divisors (see below), whose sum is σ = 350129747968. Its totient is φ = 234994737600.

The previous prime is 290044440083. The next prime is 290044440139. The reversal of 290044440091 is 190044440092.

It is not a de Polignac number, because 290044440091 - 2³ = 290044440083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 290044440091.

It is not an unprimeable number, because it can be changed into a prime (290044440071) 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, 15532650 + ... + 15551311.

It is an arithmetic number, because the mean of its divisors is an integer number (21883109248).

Almost surely, 2^290044440091 is an apocalyptic number.

290044440091 is a deficient number, since it is larger than the sum of its proper divisors (60085307877).

290044440091 is a wasteful number, since it uses less digits than its factorization.

290044440091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31084042.

The product of its (nonzero) digits is 41472, while the sum is 37.

Subtracting from 290044440091 its reverse (190044440092), we obtain a palindrome (99999999999).

The spelling of 290044440091 in words is "two hundred ninety billion, forty-four million, four hundred forty thousand, ninety-one".