99009149 has 2 divisors, whose sum is σ = 99009150. Its totient is φ = 99009148.

The previous prime is 99009143. The next prime is 99009167. The reversal of 99009149 is 94190099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91336249 + 7672900 = 9557^2 + 2770^2 .

It is an emirp because it is prime and its reverse (94190099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99009149 - 2¹⁶ = 98943613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99009143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49504574 + 49504575.

It is an arithmetic number, because the mean of its divisors is an integer number (49504575).

Almost surely, 2^99009149 is an apocalyptic number.

It is an amenable number.

99009149 is a deficient number, since it is larger than the sum of its proper divisors (1).

99009149 is an equidigital number, since it uses as much as digits as its factorization.

99009149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 99009149 is about 9950.3341149933. The cubic root of 99009149 is about 462.6207509402.

The spelling of 99009149 in words is "ninety-nine million, nine thousand, one hundred forty-nine".