43998613 has 8 divisors (see below), whose sum is σ = 44844800. Its totient is φ = 43160688.

The previous prime is 43998611. The next prime is 43998631. The reversal of 43998613 is 31689934.

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

It is a cyclic number.

It is not a de Polignac number, because 43998613 - 2¹ = 43998611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43998613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43998611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9268 + ... + 13186.

It is an arithmetic number, because the mean of its divisors is an integer number (5605600).

Almost surely, 2^43998613 is an apocalyptic number.

It is an amenable number.

43998613 is a deficient number, since it is larger than the sum of its proper divisors (846187).

43998613 is a wasteful number, since it uses less digits than its factorization.

43998613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4131.

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

The square root of 43998613 is about 6633.1450308281. The cubic root of 43998613 is about 353.0311239534.

The spelling of 43998613 in words is "forty-three million, nine hundred ninety-eight thousand, six hundred thirteen".