290190973 has 2 divisors, whose sum is σ = 290190974. Its totient is φ = 290190972.

The previous prime is 290190959. The next prime is 290191039. The reversal of 290190973 is 379091092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249703204 + 40487769 = 15802^2 + 6363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-290190973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290190913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145095486 + 145095487.

It is an arithmetic number, because the mean of its divisors is an integer number (145095487).

Almost surely, 2^290190973 is an apocalyptic number.

It is an amenable number.

290190973 is a deficient number, since it is larger than the sum of its proper divisors (1).

290190973 is an equidigital number, since it uses as much as digits as its factorization.

290190973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 290190973 is about 17034.9926034619. The cubic root of 290190973 is about 662.0558583827.

The spelling of 290190973 in words is "two hundred ninety million, one hundred ninety thousand, nine hundred seventy-three".