99630709 has 2 divisors, whose sum is σ = 99630710. Its totient is φ = 99630708.

The previous prime is 99630703. The next prime is 99630799. The reversal of 99630709 is 90703699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99560484 + 70225 = 9978^2 + 265^2 .

It is an emirp because it is prime and its reverse (90703699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99630709 - 2³ = 99630701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99630701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49815354 + 49815355.

It is an arithmetic number, because the mean of its divisors is an integer number (49815355).

Almost surely, 2^99630709 is an apocalyptic number.

It is an amenable number.

99630709 is a deficient number, since it is larger than the sum of its proper divisors (1).

99630709 is an equidigital number, since it uses as much as digits as its factorization.

99630709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 99630709 is about 9981.5183714703. The cubic root of 99630709 is about 463.5868129201.

The spelling of 99630709 in words is "ninety-nine million, six hundred thirty thousand, seven hundred nine".