99523397 has 2 divisors, whose sum is σ = 99523398. Its totient is φ = 99523396.

The previous prime is 99523381. The next prime is 99523409. The reversal of 99523397 is 79332599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66357316 + 33166081 = 8146^2 + 5759^2 .

It is an emirp because it is prime and its reverse (79332599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99523397 - 2⁴ = 99523381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99523337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49761698 + 49761699.

It is an arithmetic number, because the mean of its divisors is an integer number (49761699).

Almost surely, 2^99523397 is an apocalyptic number.

It is an amenable number.

99523397 is a deficient number, since it is larger than the sum of its proper divisors (1).

99523397 is an equidigital number, since it uses as much as digits as its factorization.

99523397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 459270, while the sum is 47.

The square root of 99523397 is about 9976.1413883325. The cubic root of 99523397 is about 463.4203103743.

The spelling of 99523397 in words is "ninety-nine million, five hundred twenty-three thousand, three hundred ninety-seven".