43969971 has 8 divisors (see below), whose sum is σ = 61712320. Its totient is φ = 27770472.

The previous prime is 43969969. The next prime is 43970011. The reversal of 43969971 is 17996934.

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

It is not a de Polignac number, because 43969971 - 2¹ = 43969969 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 43969971.

It is not an unprimeable number, because it can be changed into a prime (43969901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385645 + ... + 385758.

It is an arithmetic number, because the mean of its divisors is an integer number (7714040).

Almost surely, 2^43969971 is an apocalyptic number.

43969971 is a deficient number, since it is larger than the sum of its proper divisors (17742349).

43969971 is a wasteful number, since it uses less digits than its factorization.

43969971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771425.

The product of its digits is 367416, while the sum is 48.

The square root of 43969971 is about 6630.9856733370. The cubic root of 43969971 is about 352.9545025050.

The spelling of 43969971 in words is "forty-three million, nine hundred sixty-nine thousand, nine hundred seventy-one".