99213773 has 4 divisors (see below), whose sum is σ = 99728028. Its totient is φ = 98699520.

The previous prime is 99213739. The next prime is 99213781. The reversal of 99213773 is 37731299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37731299 = 487 ⋅77477.

It can be written as a sum of positive squares in 2 ways, for example, as 57714409 + 41499364 = 7597^2 + 6442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99213773 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99213773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99213703) 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, 256838 + ... + 257223.

It is an arithmetic number, because the mean of its divisors is an integer number (24932007).

Almost surely, 2^99213773 is an apocalyptic number.

It is an amenable number.

99213773 is a deficient number, since it is larger than the sum of its proper divisors (514255).

99213773 is a wasteful number, since it uses less digits than its factorization.

99213773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514254.

The product of its digits is 71442, while the sum is 41.

The square root of 99213773 is about 9960.6110756319. The cubic root of 99213773 is about 462.9392338620.

The spelling of 99213773 in words is "ninety-nine million, two hundred thirteen thousand, seven hundred seventy-three".