43116399 has 12 divisors (see below), whose sum is σ = 62862696. Its totient is φ = 28474992.

The previous prime is 43116331. The next prime is 43116413. The reversal of 43116399 is 99361134.

43116399 is a `hidden beast` number, since 4 + 3 + 11 + 639 + 9 = 666.

It is not a de Polignac number, because 43116399 - 2¹⁶ = 43050863 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43116299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21424 + ... + 23349.

It is an arithmetic number, because the mean of its divisors is an integer number (5238558).

Almost surely, 2^43116399 is an apocalyptic number.

43116399 is a deficient number, since it is larger than the sum of its proper divisors (19746297).

43116399 is a wasteful number, since it uses less digits than its factorization.

43116399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44886 (or 44883 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 43116399 is about 6566.3078666782. The cubic root of 43116399 is about 350.6556390814.

The spelling of 43116399 in words is "forty-three million, one hundred sixteen thousand, three hundred ninety-nine".