99940343 has 4 divisors (see below), whose sum is σ = 100068120. Its totient is φ = 99812568.

The previous prime is 99940319. The next prime is 99940369. The reversal of 99940343 is 34304999.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99940343 - 2²⁶ = 32831479 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 99940343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99940303) 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, 62708 + ... + 64281.

It is an arithmetic number, because the mean of its divisors is an integer number (25017030).

Almost surely, 2^99940343 is an apocalyptic number.

99940343 is a deficient number, since it is larger than the sum of its proper divisors (127777).

99940343 is a wasteful number, since it uses less digits than its factorization.

99940343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127776.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 99940343 is about 9997.0167049975. The cubic root of 99940343 is about 464.0665639122.

The spelling of 99940343 in words is "ninety-nine million, nine hundred forty thousand, three hundred forty-three".