43994115 has 96 divisors (see below), whose sum is σ = 89137152. Its totient is φ = 19872000.

The previous prime is 43994057. The next prime is 43994129. The reversal of 43994115 is 51149934.

43994115 = T₃₈₉ + T₃₉₀ + ... + T₆₈₅.

It is a happy number.

It is not a de Polignac number, because 43994115 - 2⁶ = 43994051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43994115.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 721185 + ... + 721245.

It is an arithmetic number, because the mean of its divisors is an integer number (928512).

Almost surely, 2^43994115 is an apocalyptic number.

43994115 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

43994115 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

43994115 is a wasteful number, since it uses less digits than its factorization.

43994115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 158 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 43994115 is about 6632.8059673113. The cubic root of 43994115 is about 353.0190933612.

The spelling of 43994115 in words is "forty-three million, nine hundred ninety-four thousand, one hundred fifteen".