851402471 has 2 divisors, whose sum is σ = 851402472. Its totient is φ = 851402470.

The previous prime is 851402467. The next prime is 851402473. The reversal of 851402471 is 174204158.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 851402471 - 2² = 851402467 is a prime.

It is a super-3 number, since 3×851402471³ (a number of 28 digits) contains 333 as substring.

Together with 851402473, 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 (851402473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425701235 + 425701236.

It is an arithmetic number, because the mean of its divisors is an integer number (425701236).

Almost surely, 2^851402471 is an apocalyptic number.

851402471 is a deficient number, since it is larger than the sum of its proper divisors (1).

851402471 is an equidigital number, since it uses as much as digits as its factorization.

851402471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 851402471 is about 29178.8017403046. The cubic root of 851402471 is about 947.7889376691.

The spelling of 851402471 in words is "eight hundred fifty-one million, four hundred two thousand, four hundred seventy-one".