43996390 has 8 divisors (see below), whose sum is σ = 79193520. Its totient is φ = 17598552.

The previous prime is 43996369. The next prime is 43996423. The reversal of 43996390 is 9369934.

It is a happy number.

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

It is a congruent number.

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, 2199810 + ... + 2199829.

It is an arithmetic number, because the mean of its divisors is an integer number (9899190).

Almost surely, 2^43996390 is an apocalyptic number.

43996390 is a deficient number, since it is larger than the sum of its proper divisors (35197130).

43996390 is a wasteful number, since it uses less digits than its factorization.

43996390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399646.

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 43996390 is about 6632.9774611407. The cubic root of 43996390 is about 353.0251783007.

The spelling of 43996390 in words is "forty-three million, nine hundred ninety-six thousand, three hundred ninety".