99637429 has 2 divisors, whose sum is σ = 99637430. Its totient is φ = 99637428.

The previous prime is 99637399. The next prime is 99637451. The reversal of 99637429 is 92473699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88924900 + 10712529 = 9430^2 + 3273^2 .

It is a cyclic number.

It is not a de Polignac number, because 99637429 - 2⁵ = 99637397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99637129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49818714 + 49818715.

It is an arithmetic number, because the mean of its divisors is an integer number (49818715).

Almost surely, 2^99637429 is an apocalyptic number.

It is an amenable number.

99637429 is a deficient number, since it is larger than the sum of its proper divisors (1).

99637429 is an equidigital number, since it uses as much as digits as its factorization.

99637429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 49.

The square root of 99637429 is about 9981.8549879268. The cubic root of 99637429 is about 463.5972355210.

The spelling of 99637429 in words is "ninety-nine million, six hundred thirty-seven thousand, four hundred twenty-nine".