290506793 has 4 divisors (see below), whose sum is σ = 290936580. Its totient is φ = 290077008.

The previous prime is 290506787. The next prime is 290506823. The reversal of 290506793 is 397605092.

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

It can be written as a sum of positive squares in 2 ways, for example, as 183115024 + 107391769 = 13532^2 + 10363^2 .

It is a cyclic number.

It is not a de Polignac number, because 290506793 - 2²⁶ = 223397929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 290506793.

It is not an unprimeable number, because it can be changed into a prime (290506763) 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, 213878 + ... + 215231.

It is an arithmetic number, because the mean of its divisors is an integer number (72734145).

Almost surely, 2^290506793 is an apocalyptic number.

It is an amenable number.

290506793 is a deficient number, since it is larger than the sum of its proper divisors (429787).

290506793 is an equidigital number, since it uses as much as digits as its factorization.

290506793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429786.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 290506793 is about 17044.2598255248. The cubic root of 290506793 is about 662.2959470303.

The spelling of 290506793 in words is "two hundred ninety million, five hundred six thousand, seven hundred ninety-three".