99194257 has 2 divisors, whose sum is σ = 99194258. Its totient is φ = 99194256.

The previous prime is 99194209. The next prime is 99194261. The reversal of 99194257 is 75249199.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74632321 + 24561936 = 8639^2 + 4956^2 .

It is an emirp because it is prime and its reverse (75249199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99194257 - 2¹⁹ = 98669969 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99194057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49597128 + 49597129.

It is an arithmetic number, because the mean of its divisors is an integer number (49597129).

Almost surely, 2^99194257 is an apocalyptic number.

It is an amenable number.

99194257 is a deficient number, since it is larger than the sum of its proper divisors (1).

99194257 is an equidigital number, since it uses as much as digits as its factorization.

99194257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 46.

The square root of 99194257 is about 9959.6313686803. The cubic root of 99194257 is about 462.9088774768.

The spelling of 99194257 in words is "ninety-nine million, one hundred ninety-four thousand, two hundred fifty-seven".