471070991 has 2 divisors, whose sum is σ = 471070992. Its totient is φ = 471070990.

The previous prime is 471070987. The next prime is 471071011. The reversal of 471070991 is 199070174.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 471070991 - 2² = 471070987 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (471072991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235535495 + 235535496.

It is an arithmetic number, because the mean of its divisors is an integer number (235535496).

Almost surely, 2^471070991 is an apocalyptic number.

471070991 is a deficient number, since it is larger than the sum of its proper divisors (1).

471070991 is an equidigital number, since it uses as much as digits as its factorization.

471070991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 471070991 is about 21704.1698988927. The cubic root of 471070991 is about 778.0881244031.

The spelling of 471070991 in words is "four hundred seventy-one million, seventy thousand, nine hundred ninety-one".