290694997 has 2 divisors, whose sum is σ = 290694998. Its totient is φ = 290694996.

The previous prime is 290694991. The next prime is 290695033. The reversal of 290694997 is 799496092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 290566116 + 128881 = 17046^2 + 359^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-290694997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290694991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145347498 + 145347499.

It is an arithmetic number, because the mean of its divisors is an integer number (145347499).

Almost surely, 2^290694997 is an apocalyptic number.

It is an amenable number.

290694997 is a deficient number, since it is larger than the sum of its proper divisors (1).

290694997 is an equidigital number, since it uses as much as digits as its factorization.

290694997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2204496, while the sum is 55.

The square root of 290694997 is about 17049.7799692547. The cubic root of 290694997 is about 662.4389383380.

It can be divided in two parts, 2906 and 94997, that added together give a triangular number (97903 = T₄₄₂).

The spelling of 290694997 in words is "two hundred ninety million, six hundred ninety-four thousand, nine hundred ninety-seven".