99749567 has 2 divisors, whose sum is σ = 99749568. Its totient is φ = 99749566.

The previous prime is 99749539. The next prime is 99749569. The reversal of 99749567 is 76594799.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99749567 is a prime.

It is a super-2 number, since 2×99749567² = 19899952233374978, which contains 22 as substring.

Together with 99749569, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99749569) 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, 49874783 + 49874784.

It is an arithmetic number, because the mean of its divisors is an integer number (49874784).

Almost surely, 2^99749567 is an apocalyptic number.

99749567 is a deficient number, since it is larger than the sum of its proper divisors (1).

99749567 is an equidigital number, since it uses as much as digits as its factorization.

99749567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4286520, while the sum is 56.

The square root of 99749567 is about 9987.4705005822. The cubic root of 99749567 is about 463.7710904550.

The spelling of 99749567 in words is "ninety-nine million, seven hundred forty-nine thousand, five hundred sixty-seven".