43749047 has 8 divisors (see below), whose sum is σ = 44162160. Its totient is φ = 43338240.

The previous prime is 43749019. The next prime is 43749053. The reversal of 43749047 is 74094734.

It is a happy number.

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 43749047 - 2¹² = 43744951 is a prime.

It is a super-2 number, since 2×43749047² = 3827958226816418, which contains 22 as substring.

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 43749047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43749247) 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, 80597 + ... + 81137.

It is an arithmetic number, because the mean of its divisors is an integer number (5520270).

Almost surely, 2^43749047 is an apocalyptic number.

43749047 is a deficient number, since it is larger than the sum of its proper divisors (413113).

43749047 is a wasteful number, since it uses less digits than its factorization.

43749047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 43749047 is about 6614.3062372406. The cubic root of 43749047 is about 352.3623780796.

The spelling of 43749047 in words is "forty-three million, seven hundred forty-nine thousand, forty-seven".