43949013 has 8 divisors (see below), whose sum is σ = 58660800. Its totient is φ = 29268288.

The previous prime is 43949011. The next prime is 43949027. The reversal of 43949013 is 31094934.

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

It is not a de Polignac number, because 43949013 - 2¹ = 43949011 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43949011) 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, 4233 + ... + 10286.

It is an arithmetic number, because the mean of its divisors is an integer number (7332600).

Almost surely, 2^43949013 is an apocalyptic number.

It is an amenable number.

43949013 is a deficient number, since it is larger than the sum of its proper divisors (14711787).

43949013 is a wasteful number, since it uses less digits than its factorization.

43949013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15531.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 43949013 is about 6629.4051769371. The cubic root of 43949013 is about 352.8984157721.

The spelling of 43949013 in words is "forty-three million, nine hundred forty-nine thousand, thirteen".