43997339 has 4 divisors (see below), whose sum is σ = 45416640. Its totient is φ = 42578040.

The previous prime is 43997333. The next prime is 43997347. The reversal of 43997339 is 93379934.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43997339 - 2¹⁶ = 43931803 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43997293 and 43997302.

It is not an unprimeable number, because it can be changed into a prime (43997333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 709604 + ... + 709665.

It is an arithmetic number, because the mean of its divisors is an integer number (11354160).

Almost surely, 2^43997339 is an apocalyptic number.

43997339 is a deficient number, since it is larger than the sum of its proper divisors (1419301).

43997339 is a wasteful number, since it uses less digits than its factorization.

43997339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419300.

The product of its digits is 551124, while the sum is 47.

The square root of 43997339 is about 6633.0489972561. The cubic root of 43997339 is about 353.0277165278.

The spelling of 43997339 in words is "forty-three million, nine hundred ninety-seven thousand, three hundred thirty-nine".