99723893 has 4 divisors (see below), whose sum is σ = 100656000. Its totient is φ = 98791788.

The previous prime is 99723863. The next prime is 99723901. The reversal of 99723893 is 39832799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99723893 - 2¹² = 99719797 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 (99723863) 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, 465893 + ... + 466106.

It is an arithmetic number, because the mean of its divisors is an integer number (25164000).

Almost surely, 2^99723893 is an apocalyptic number.

It is an amenable number.

99723893 is a deficient number, since it is larger than the sum of its proper divisors (932107).

99723893 is a wasteful number, since it uses less digits than its factorization.

99723893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932106.

The product of its digits is 734832, while the sum is 50.

The square root of 99723893 is about 9986.1851074372. The cubic root of 99723893 is about 463.7312978656.

The spelling of 99723893 in words is "ninety-nine million, seven hundred twenty-three thousand, eight hundred ninety-three".