290672293 has 4 divisors (see below), whose sum is σ = 291363148. Its totient is φ = 289981440.

The previous prime is 290672257. The next prime is 290672323. The reversal of 290672293 is 392276092.

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 35247969 + 255424324 = 5937^2 + 15982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-290672293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290672233) 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, 344796 + ... + 345637.

It is an arithmetic number, because the mean of its divisors is an integer number (72840787).

Almost surely, 2^290672293 is an apocalyptic number.

It is an amenable number.

290672293 is a deficient number, since it is larger than the sum of its proper divisors (690855).

290672293 is an equidigital number, since it uses as much as digits as its factorization.

290672293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690854.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 290672293 is about 17049.1141412098. The cubic root of 290672293 is about 662.4216918479.

The spelling of 290672293 in words is "two hundred ninety million, six hundred seventy-two thousand, two hundred ninety-three".