99180929 has 2 divisors, whose sum is σ = 99180930. Its totient is φ = 99180928.

The previous prime is 99180911. The next prime is 99180943. The reversal of 99180929 is 92908199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96491329 + 2689600 = 9823^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 99180929 - 2⁸ = 99180673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99180229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49590464 + 49590465.

It is an arithmetic number, because the mean of its divisors is an integer number (49590465).

Almost surely, 2^99180929 is an apocalyptic number.

It is an amenable number.

99180929 is a deficient number, since it is larger than the sum of its proper divisors (1).

99180929 is an equidigital number, since it uses as much as digits as its factorization.

99180929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 47.

The square root of 99180929 is about 9958.9622451338. The cubic root of 99180929 is about 462.8881439987. Note that the first 3 decimals are identical.

It can be divided in two parts, 99 and 180929, that multiplied together give a palindrome (17911971).

The spelling of 99180929 in words is "ninety-nine million, one hundred eighty thousand, nine hundred twenty-nine".