99322009 has 2 divisors, whose sum is σ = 99322010. Its totient is φ = 99322008.

The previous prime is 99321991. The next prime is 99322031. The reversal of 99322009 is 90022399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99201600 + 120409 = 9960^2 + 347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99322009 is a prime.

It is a super-2 number, since 2×99322009² = 19729722943592162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99322079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49661004 + 49661005.

It is an arithmetic number, because the mean of its divisors is an integer number (49661005).

Almost surely, 2^99322009 is an apocalyptic number.

It is an amenable number.

99322009 is a deficient number, since it is larger than the sum of its proper divisors (1).

99322009 is an equidigital number, since it uses as much as digits as its factorization.

99322009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 99322009 is about 9966.0427954128. The cubic root of 99322009 is about 463.1075185647.

The spelling of 99322009 in words is "ninety-nine million, three hundred twenty-two thousand, nine".