99973597 has 2 divisors, whose sum is σ = 99973598. Its totient is φ = 99973596.

The previous prime is 99973579. The next prime is 99973613. The reversal of 99973597 is 79537999.

Together with previous prime (99973579) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67551961 + 32421636 = 8219^2 + 5694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99973597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99973697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49986798 + 49986799.

It is an arithmetic number, because the mean of its divisors is an integer number (49986799).

Almost surely, 2^99973597 is an apocalyptic number.

It is an amenable number.

99973597 is a deficient number, since it is larger than the sum of its proper divisors (1).

99973597 is an equidigital number, since it uses as much as digits as its factorization.

99973597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4822335, while the sum is 58.

The square root of 99973597 is about 9998.6797628487. The cubic root of 99973597 is about 464.1180291422.

The spelling of 99973597 in words is "ninety-nine million, nine hundred seventy-three thousand, five hundred ninety-seven".