470805917 has 2 divisors, whose sum is σ = 470805918. Its totient is φ = 470805916.

The previous prime is 470805913. The next prime is 470805919. The reversal of 470805917 is 719508074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 464014681 + 6791236 = 21541^2 + 2606^2 .

It is a cyclic number.

It is not a de Polignac number, because 470805917 - 2² = 470805913 is a prime.

It is a super-2 number, since 2×470805917² = 443316422964421778, which contains 22 as substring.

Together with 470805919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (470805913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235402958 + 235402959.

It is an arithmetic number, because the mean of its divisors is an integer number (235402959).

Almost surely, 2^470805917 is an apocalyptic number.

It is an amenable number.

470805917 is a deficient number, since it is larger than the sum of its proper divisors (1).

470805917 is an equidigital number, since it uses as much as digits as its factorization.

470805917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 470805917 is about 21698.0625171926. The cubic root of 470805917 is about 777.9421523284.

The spelling of 470805917 in words is "four hundred seventy million, eight hundred five thousand, nine hundred seventeen".