849077939 has 2 divisors, whose sum is σ = 849077940. Its totient is φ = 849077938.

The previous prime is 849077893. The next prime is 849077951. The reversal of 849077939 is 939770948.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-849077939 is a prime.

It is not a weakly prime, because it can be changed into another prime (849077539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424538969 + 424538970.

It is an arithmetic number, because the mean of its divisors is an integer number (424538970).

Almost surely, 2^849077939 is an apocalyptic number.

849077939 is a deficient number, since it is larger than the sum of its proper divisors (1).

849077939 is an equidigital number, since it uses as much as digits as its factorization.

849077939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The square root of 849077939 is about 29138.9419677517. The cubic root of 849077939 is about 946.9255881202.

The spelling of 849077939 in words is "eight hundred forty-nine million, seventy-seven thousand, nine hundred thirty-nine".