290166449 has 2 divisors, whose sum is σ = 290166450. Its totient is φ = 290166448.

The previous prime is 290166419. The next prime is 290166473. The reversal of 290166449 is 944661092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279558400 + 10608049 = 16720^2 + 3257^2 .

It is a cyclic number.

It is not a de Polignac number, because 290166449 - 2¹⁶ = 290100913 is a prime.

It is not a weakly prime, because it can be changed into another prime (290166419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145083224 + 145083225.

It is an arithmetic number, because the mean of its divisors is an integer number (145083225).

Almost surely, 2^290166449 is an apocalyptic number.

It is an amenable number.

290166449 is a deficient number, since it is larger than the sum of its proper divisors (1).

290166449 is an equidigital number, since it uses as much as digits as its factorization.

290166449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 290166449 is about 17034.2727757894. The cubic root of 290166449 is about 662.0372077735.

The spelling of 290166449 in words is "two hundred ninety million, one hundred sixty-six thousand, four hundred forty-nine".