99823291 has 2 divisors, whose sum is σ = 99823292. Its totient is φ = 99823290.

The previous prime is 99823279. The next prime is 99823301. The reversal of 99823291 is 19232899.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99823291 is a prime.

It is not a weakly prime, because it can be changed into another prime (99823271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49911645 + 49911646.

It is an arithmetic number, because the mean of its divisors is an integer number (49911646).

Almost surely, 2^99823291 is an apocalyptic number.

99823291 is the 5341-st centered heptagonal number.

99823291 is a deficient number, since it is larger than the sum of its proper divisors (1).

99823291 is an equidigital number, since it uses as much as digits as its factorization.

99823291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 43.

The square root of 99823291 is about 9991.1606432886. The cubic root of 99823291 is about 463.8853186531.

The spelling of 99823291 in words is "ninety-nine million, eight hundred twenty-three thousand, two hundred ninety-one".