470249861 has 2 divisors, whose sum is σ = 470249862. Its totient is φ = 470249860.

The previous prime is 470249821. The next prime is 470249873. The reversal of 470249861 is 168942074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355888225 + 114361636 = 18865^2 + 10694^2 .

It is a cyclic number.

It is not a de Polignac number, because 470249861 - 2⁶ = 470249797 is a prime.

It is a super-2 number, since 2×470249861² = 442269863541038642, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (470249821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235124930 + 235124931.

It is an arithmetic number, because the mean of its divisors is an integer number (235124931).

Almost surely, 2^470249861 is an apocalyptic number.

It is an amenable number.

470249861 is a deficient number, since it is larger than the sum of its proper divisors (1).

470249861 is an equidigital number, since it uses as much as digits as its factorization.

470249861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 470249861 is about 21685.2452372575. The cubic root of 470249861 is about 777.6357629365.

The spelling of 470249861 in words is "four hundred seventy million, two hundred forty-nine thousand, eight hundred sixty-one".