290438097 has 4 divisors (see below), whose sum is σ = 387250800. Its totient is φ = 193625396.

The previous prime is 290438087. The next prime is 290438107. The reversal of 290438097 is 790834092.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (290438087) and next prime (290438107).

It is a cyclic number.

It is not a de Polignac number, because 290438097 - 2⁶ = 290438033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (290438077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48406347 + ... + 48406352.

It is an arithmetic number, because the mean of its divisors is an integer number (96812700).

Almost surely, 2^290438097 is an apocalyptic number.

It is an amenable number.

290438097 is a deficient number, since it is larger than the sum of its proper divisors (96812703).

290438097 is an equidigital number, since it uses as much as digits as its factorization.

290438097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96812702.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 290438097 is about 17042.2444824618. The cubic root of 290438097 is about 662.2437386480.

The spelling of 290438097 in words is "two hundred ninety million, four hundred thirty-eight thousand, ninety-seven".