99397893 has 8 divisors (see below), whose sum is σ = 151463488. Its totient is φ = 56798784.

The previous prime is 99397891. The next prime is 99397901. The reversal of 99397893 is 39879399.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99397893 - 2¹ = 99397891 is a prime.

It is a super-2 number, since 2×99397893² = 19759882265678898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99397891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2366596 + ... + 2366637.

It is an arithmetic number, because the mean of its divisors is an integer number (18932936).

Almost surely, 2^99397893 is an apocalyptic number.

It is an amenable number.

99397893 is a deficient number, since it is larger than the sum of its proper divisors (52065595).

99397893 is a wasteful number, since it uses less digits than its factorization.

99397893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4733243.

The product of its digits is 3306744, while the sum is 57.

The square root of 99397893 is about 9969.8491964523. The cubic root of 99397893 is about 463.2254296744.

Adding to 99397893 its sum of digits (57), we get a triangular number (99397950 = T₁₄₀₉₉).

The spelling of 99397893 in words is "ninety-nine million, three hundred ninety-seven thousand, eight hundred ninety-three".