99783427 has 2 divisors, whose sum is σ = 99783428. Its totient is φ = 99783426.

The previous prime is 99783379. The next prime is 99783443. The reversal of 99783427 is 72438799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99783427 - 2¹¹ = 99781379 is a prime.

It is not a weakly prime, because it can be changed into another prime (99783457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49891713 + 49891714.

It is an arithmetic number, because the mean of its divisors is an integer number (49891714).

Almost surely, 2^99783427 is an apocalyptic number.

99783427 is a deficient number, since it is larger than the sum of its proper divisors (1).

99783427 is an equidigital number, since it uses as much as digits as its factorization.

99783427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 49.

The square root of 99783427 is about 9989.1654806595. The cubic root of 99783427 is about 463.8235602320.

The spelling of 99783427 in words is "ninety-nine million, seven hundred eighty-three thousand, four hundred twenty-seven".