99677839 has 2 divisors, whose sum is σ = 99677840. Its totient is φ = 99677838.

The previous prime is 99677833. The next prime is 99677849. The reversal of 99677839 is 93877699.

It is a weak prime.

It is an emirp because it is prime and its reverse (93877699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99677839 - 2⁵ = 99677807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99677833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49838919 + 49838920.

It is an arithmetic number, because the mean of its divisors is an integer number (49838920).

Almost surely, 2^99677839 is an apocalyptic number.

99677839 is a deficient number, since it is larger than the sum of its proper divisors (1).

99677839 is an equidigital number, since it uses as much as digits as its factorization.

99677839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5143824, while the sum is 58.

The square root of 99677839 is about 9983.8789555964. The cubic root of 99677839 is about 463.6599008346.

The spelling of 99677839 in words is "ninety-nine million, six hundred seventy-seven thousand, eight hundred thirty-nine".