290640097 has 16 divisors (see below), whose sum is σ = 329011200. Its totient is φ = 254350800.

The previous prime is 290640071. The next prime is 290640101. The reversal of 290640097 is 790046092.

It is not a de Polignac number, because 290640097 - 2¹⁵ = 290607329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290640067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65718 + ... + 70000.

It is an arithmetic number, because the mean of its divisors is an integer number (20563200).

Almost surely, 2^290640097 is an apocalyptic number.

It is an amenable number.

290640097 is a deficient number, since it is larger than the sum of its proper divisors (38371103).

290640097 is a wasteful number, since it uses less digits than its factorization.

290640097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 290640097 is about 17048.1699017812. The cubic root of 290640097 is about 662.3972334724.

The spelling of 290640097 in words is "two hundred ninety million, six hundred forty thousand, ninety-seven".