290087117 has 4 divisors (see below), whose sum is σ = 305354880. Its totient is φ = 274819356.

The previous prime is 290087113. The next prime is 290087123. The reversal of 290087117 is 711780092.

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 a cyclic number.

It is not a de Polignac number, because 290087117 - 2² = 290087113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290087111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7633853 + ... + 7633890.

It is an arithmetic number, because the mean of its divisors is an integer number (76338720).

Almost surely, 2^290087117 is an apocalyptic number.

It is an amenable number.

290087117 is a deficient number, since it is larger than the sum of its proper divisors (15267763).

290087117 is a wasteful number, since it uses less digits than its factorization.

290087117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15267762.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 290087117 is about 17031.9440170522. The cubic root of 290087117 is about 661.9768682419.

The spelling of 290087117 in words is "two hundred ninety million, eighty-seven thousand, one hundred seventeen".