8772839 has 2 divisors, whose sum is σ = 8772840. Its totient is φ = 8772838.

The previous prime is 8772809. The next prime is 8772847. The reversal of 8772839 is 9382778.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8772839 - 2²⁰ = 7724263 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8772839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8772809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4386419 + 4386420.

It is an arithmetic number, because the mean of its divisors is an integer number (4386420).

Almost surely, 2^8772839 is an apocalyptic number.

8772839 is a deficient number, since it is larger than the sum of its proper divisors (1).

8772839 is an equidigital number, since it uses as much as digits as its factorization.

8772839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 8772839 is about 2961.8978712981. The cubic root of 8772839 is about 206.2433969113.

The spelling of 8772839 in words is "eight million, seven hundred seventy-two thousand, eight hundred thirty-nine".