43996138 has 8 divisors (see below), whose sum is σ = 67529088. Its totient is φ = 21486444.

The previous prime is 43996129. The next prime is 43996159. The reversal of 43996138 is 83169934.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 43996094 and 43996103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255706 + ... + 255877.

It is an arithmetic number, because the mean of its divisors is an integer number (8441136).

Almost surely, 2^43996138 is an apocalyptic number.

43996138 is a deficient number, since it is larger than the sum of its proper divisors (23532950).

43996138 is a wasteful number, since it uses less digits than its factorization.

43996138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511628.

The product of its digits is 139968, while the sum is 43.

The square root of 43996138 is about 6632.9584651195. The cubic root of 43996138 is about 353.0245042870.

The spelling of 43996138 in words is "forty-three million, nine hundred ninety-six thousand, one hundred thirty-eight".