99799397 has 4 divisors (see below), whose sum is σ = 102496716. Its totient is φ = 97102080.

The previous prime is 99799393. The next prime is 99799409. The reversal of 99799397 is 79399799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79399799 = 853 ⋅93083.

It can be written as a sum of positive squares in 2 ways, for example, as 74407876 + 25391521 = 8626^2 + 5039^2 .

It is a cyclic number.

It is not a de Polignac number, because 99799397 - 2² = 99799393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99799391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348604 + ... + 1348677.

It is an arithmetic number, because the mean of its divisors is an integer number (25624179).

Almost surely, 2^99799397 is an apocalyptic number.

It is an amenable number.

99799397 is a deficient number, since it is larger than the sum of its proper divisors (2697319).

99799397 is a wasteful number, since it uses less digits than its factorization.

99799397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697318.

The product of its digits is 8680203, while the sum is 62.

The square root of 99799397 is about 9989.9648147529. The cubic root of 99799397 is about 463.8483033761.

The spelling of 99799397 in words is "ninety-nine million, seven hundred ninety-nine thousand, three hundred ninety-seven".