71959943 has 16 divisors (see below), whose sum is σ = 80196480. Its totient is φ = 64020000.

The previous prime is 71959919. The next prime is 71959967. The reversal of 71959943 is 34995917.

It is an interprime number because it is at equal distance from previous prime (71959919) and next prime (71959967).

It is not a de Polignac number, because 71959943 - 2¹⁰ = 71958919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71959913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184793 + ... + 185181.

It is an arithmetic number, because the mean of its divisors is an integer number (5012280).

Almost surely, 2^71959943 is an apocalyptic number.

71959943 is a deficient number, since it is larger than the sum of its proper divisors (8236537).

71959943 is a wasteful number, since it uses less digits than its factorization.

71959943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718.

The product of its digits is 306180, while the sum is 47.

The square root of 71959943 is about 8482.9206644881. The cubic root of 71959943 is about 415.9396003748.

The spelling of 71959943 in words is "seventy-one million, nine hundred fifty-nine thousand, nine hundred forty-three".