99524389 has 2 divisors, whose sum is σ = 99524390. Its totient is φ = 99524388.

The previous prime is 99524323. The next prime is 99524429. The reversal of 99524389 is 98342599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71115489 + 28408900 = 8433^2 + 5330^2 .

It is an emirp because it is prime and its reverse (98342599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99524389 - 2¹⁹ = 99000101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99524309) 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, 49762194 + 49762195.

It is an arithmetic number, because the mean of its divisors is an integer number (49762195).

Almost surely, 2^99524389 is an apocalyptic number.

It is an amenable number.

99524389 is a deficient number, since it is larger than the sum of its proper divisors (1).

99524389 is an equidigital number, since it uses as much as digits as its factorization.

99524389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 49.

The square root of 99524389 is about 9976.1911068303. The cubic root of 99524389 is about 463.4218500840.

It can be divided in two parts, 9952 and 4389, that added together give a palindrome (14341).

The spelling of 99524389 in words is "ninety-nine million, five hundred twenty-four thousand, three hundred eighty-nine".