290609602397 has 2 divisors, whose sum is σ = 290609602398. Its totient is φ = 290609602396.

The previous prime is 290609602357. The next prime is 290609602433. The reversal of 290609602397 is 793206906092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272472516121 + 18137086276 = 521989^2 + 134674^2 .

It is a cyclic number.

It is not a de Polignac number, because 290609602397 - 2¹⁸ = 290609340253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290609602337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145304801198 + 145304801199.

It is an arithmetic number, because the mean of its divisors is an integer number (145304801199).

Almost surely, 2^290609602397 is an apocalyptic number.

It is an amenable number.

290609602397 is a deficient number, since it is larger than the sum of its proper divisors (1).

290609602397 is an equidigital number, since it uses as much as digits as its factorization.

290609602397 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 53.

The spelling of 290609602397 in words is "two hundred ninety billion, six hundred nine million, six hundred two thousand, three hundred ninety-seven".