870290417 has 2 divisors, whose sum is σ = 870290418. Its totient is φ = 870290416.

The previous prime is 870290387. The next prime is 870290419. The reversal of 870290417 is 714092078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 857552656 + 12737761 = 29284^2 + 3569^2 .

It is a cyclic number.

It is not a de Polignac number, because 870290417 - 2¹⁰ = 870289393 is a prime.

Together with 870290419, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (870290419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435145208 + 435145209.

It is an arithmetic number, because the mean of its divisors is an integer number (435145209).

Almost surely, 2^870290417 is an apocalyptic number.

It is an amenable number.

870290417 is a deficient number, since it is larger than the sum of its proper divisors (1).

870290417 is an equidigital number, since it uses as much as digits as its factorization.

870290417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 870290417 is about 29500.6850259447. The cubic root of 870290417 is about 954.7464827828.

The spelling of 870290417 in words is "eight hundred seventy million, two hundred ninety thousand, four hundred seventeen".