290865097 has 2 divisors, whose sum is σ = 290865098. Its totient is φ = 290865096.

The previous prime is 290865049. The next prime is 290865101. The reversal of 290865097 is 790568092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266864896 + 24000201 = 16336^2 + 4899^2 .

It is a cyclic number.

It is not a de Polignac number, because 290865097 - 2²⁷ = 156647369 is a prime.

It is not a weakly prime, because it can be changed into another prime (290865017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145432548 + 145432549.

It is an arithmetic number, because the mean of its divisors is an integer number (145432549).

Almost surely, 2^290865097 is an apocalyptic number.

It is an amenable number.

290865097 is a deficient number, since it is larger than the sum of its proper divisors (1).

290865097 is an equidigital number, since it uses as much as digits as its factorization.

290865097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 290865097 is about 17054.7675739073. The cubic root of 290865097 is about 662.5681217242.

The spelling of 290865097 in words is "two hundred ninety million, eight hundred sixty-five thousand, ninety-seven".