290166409 has 12 divisors (see below), whose sum is σ = 315366096. Its totient is φ = 266855472.

The previous prime is 290166343. The next prime is 290166419. The reversal of 290166409 is 904661092.

It is not a de Polignac number, because 290166409 - 2¹³ = 290158217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290166419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44794 + ... + 50860.

It is an arithmetic number, because the mean of its divisors is an integer number (26280508).

Almost surely, 2^290166409 is an apocalyptic number.

It is an amenable number.

290166409 is a deficient number, since it is larger than the sum of its proper divisors (25199687).

290166409 is a wasteful number, since it uses less digits than its factorization.

290166409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6376 (or 6363 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 290166409 is about 17034.2716016858. The cubic root of 290166409 is about 662.0371773525.

The spelling of 290166409 in words is "two hundred ninety million, one hundred sixty-six thousand, four hundred nine".