99630919 has 2 divisors, whose sum is σ = 99630920. Its totient is φ = 99630918.

The previous prime is 99630893. The next prime is 99630967. The reversal of 99630919 is 91903699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99630919 - 2⁵ = 99630887 is a prime.

It is a super-2 number, since 2×99630919² = 19852640041569122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99630989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49815459 + 49815460.

It is an arithmetic number, because the mean of its divisors is an integer number (49815460).

Almost surely, 2^99630919 is an apocalyptic number.

99630919 is a deficient number, since it is larger than the sum of its proper divisors (1).

99630919 is an equidigital number, since it uses as much as digits as its factorization.

99630919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 118098, while the sum is 46.

The square root of 99630919 is about 9981.5288909064. The cubic root of 99630919 is about 463.5871386335.

The spelling of 99630919 in words is "ninety-nine million, six hundred thirty thousand, nine hundred nineteen".