99939743 has 4 divisors (see below), whose sum is σ = 99966528. Its totient is φ = 99912960.

The previous prime is 99939703. The next prime is 99939757. The reversal of 99939743 is 34793999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34793999 = 109 ⋅319211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99939743 is a prime.

It is a super-4 number, since 4×99939743⁴ (a number of 33 digits) contains 4444 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 (99939703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6671 + ... + 15632.

It is an arithmetic number, because the mean of its divisors is an integer number (24991632).

Almost surely, 2^99939743 is an apocalyptic number.

99939743 is a deficient number, since it is larger than the sum of its proper divisors (26785).

99939743 is a wasteful number, since it uses less digits than its factorization.

99939743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26784.

The product of its digits is 1653372, while the sum is 53.

The square root of 99939743 is about 9996.9866960000. The cubic root of 99939743 is about 464.0656352231.

The spelling of 99939743 in words is "ninety-nine million, nine hundred thirty-nine thousand, seven hundred forty-three".