99400247 has 2 divisors, whose sum is σ = 99400248. Its totient is φ = 99400246.

The previous prime is 99400183. The next prime is 99400271. The reversal of 99400247 is 74200499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99400247 - 2⁶ = 99400183 is a prime.

It is a super-2 number, since 2×99400247² = 19760818207322018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99400297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49700123 + 49700124.

It is an arithmetic number, because the mean of its divisors is an integer number (49700124).

Almost surely, 2^99400247 is an apocalyptic number.

99400247 is a deficient number, since it is larger than the sum of its proper divisors (1).

99400247 is an equidigital number, since it uses as much as digits as its factorization.

99400247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 99400247 is about 9969.9672517015. The cubic root of 99400247 is about 463.2290864388.

The spelling of 99400247 in words is "ninety-nine million, four hundred thousand, two hundred forty-seven".