43722099 has 20 divisors (see below), whose sum is σ = 66837496. Its totient is φ = 28467936.

The previous prime is 43722061. The next prime is 43722101. The reversal of 43722099 is 99022734.

It is not a de Polignac number, because 43722099 - 2¹³ = 43713907 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 (43722199) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2794 + ... + 9759.

Almost surely, 2^43722099 is an apocalyptic number.

43722099 is a deficient number, since it is larger than the sum of its proper divisors (23115397).

43722099 is a wasteful number, since it uses less digits than its factorization.

43722099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12608 (or 12599 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 43722099 is about 6612.2688239363. The cubic root of 43722099 is about 352.2900152716.

The spelling of 43722099 in words is "forty-three million, seven hundred twenty-two thousand, ninety-nine".