99530791 has 2 divisors, whose sum is σ = 99530792. Its totient is φ = 99530790.

The previous prime is 99530771. The next prime is 99530881. The reversal of 99530791 is 19703599.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99530791 - 2¹¹ = 99528743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99530701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49765395 + 49765396.

It is an arithmetic number, because the mean of its divisors is an integer number (49765396).

Almost surely, 2^99530791 is an apocalyptic number.

99530791 is a deficient number, since it is larger than the sum of its proper divisors (1).

99530791 is an equidigital number, since it uses as much as digits as its factorization.

99530791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76545, while the sum is 43.

The square root of 99530791 is about 9976.5119656120. The cubic root of 99530791 is about 463.4317865532.

The spelling of 99530791 in words is "ninety-nine million, five hundred thirty thousand, seven hundred ninety-one".