849623647 has 2 divisors, whose sum is σ = 849623648. Its totient is φ = 849623646.

The previous prime is 849623641. The next prime is 849623707. The reversal of 849623647 is 746326948.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 849623647 - 2³ = 849623639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 849623647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (849623641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424811823 + 424811824.

It is an arithmetic number, because the mean of its divisors is an integer number (424811824).

Almost surely, 2^849623647 is an apocalyptic number.

849623647 is a deficient number, since it is larger than the sum of its proper divisors (1).

849623647 is an equidigital number, since it uses as much as digits as its factorization.

849623647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 49.

The square root of 849623647 is about 29148.3043589160. The cubic root of 849623647 is about 947.1284097849.

The spelling of 849623647 in words is "eight hundred forty-nine million, six hundred twenty-three thousand, six hundred forty-seven".