99885623 has 2 divisors, whose sum is σ = 99885624. Its totient is φ = 99885622.

The previous prime is 99885613. The next prime is 99885629. The reversal of 99885623 is 32658899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99885623 - 2¹² = 99881527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99885629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49942811 + 49942812.

It is an arithmetic number, because the mean of its divisors is an integer number (49942812).

Almost surely, 2^99885623 is an apocalyptic number.

99885623 is a deficient number, since it is larger than the sum of its proper divisors (1).

99885623 is an equidigital number, since it uses as much as digits as its factorization.

99885623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 50.

The square root of 99885623 is about 9994.2795138019. The cubic root of 99885623 is about 463.9818521811.

The spelling of 99885623 in words is "ninety-nine million, eight hundred eighty-five thousand, six hundred twenty-three".