99367997 has 4 divisors (see below), whose sum is σ = 100279740. Its totient is φ = 98456256.

The previous prime is 99367993. The next prime is 99368023. The reversal of 99367997 is 79976399.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79976399 = 433 ⋅184703.

It can be written as a sum of positive squares in 2 ways, for example, as 86508601 + 12859396 = 9301^2 + 3586^2 .

It is a cyclic number.

It is not a de Polignac number, because 99367997 - 2² = 99367993 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 (99367991) 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, 455708 + ... + 455925.

It is an arithmetic number, because the mean of its divisors is an integer number (25069935).

Almost surely, 2^99367997 is an apocalyptic number.

It is an amenable number.

99367997 is a deficient number, since it is larger than the sum of its proper divisors (911743).

99367997 is a wasteful number, since it uses less digits than its factorization.

99367997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911742.

The product of its digits is 5786802, while the sum is 59.

The square root of 99367997 is about 9968.3497631253. The cubic root of 99367997 is about 463.1789834313.

The spelling of 99367997 in words is "ninety-nine million, three hundred sixty-seven thousand, nine hundred ninety-seven".