840070471 has 2 divisors, whose sum is σ = 840070472. Its totient is φ = 840070470.

The previous prime is 840070447. The next prime is 840070481. The reversal of 840070471 is 174070048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 840070471 - 2¹¹ = 840068423 is a prime.

It is a super-3 number, since 3×840070471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840070481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420035235 + 420035236.

It is an arithmetic number, because the mean of its divisors is an integer number (420035236).

Almost surely, 2^840070471 is an apocalyptic number.

840070471 is a deficient number, since it is larger than the sum of its proper divisors (1).

840070471 is an equidigital number, since it uses as much as digits as its factorization.

840070471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 840070471 is about 28983.9692071324. The cubic root of 840070471 is about 943.5651810884.

The spelling of 840070471 in words is "eight hundred forty million, seventy thousand, four hundred seventy-one".