71943433 has 4 divisors (see below), whose sum is σ = 72374400. Its totient is φ = 71512468.

The previous prime is 71943413. The next prime is 71943449. The reversal of 71943433 is 33434917.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33434917 = 3727 ⋅8971.

It is a cyclic number.

It is not a de Polignac number, because 71943433 - 2⁵ = 71943401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71943413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215233 + ... + 215566.

It is an arithmetic number, because the mean of its divisors is an integer number (18093600).

Almost surely, 2^71943433 is an apocalyptic number.

It is an amenable number.

71943433 is a deficient number, since it is larger than the sum of its proper divisors (430967).

71943433 is a wasteful number, since it uses less digits than its factorization.

71943433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430966.

The product of its digits is 27216, while the sum is 34.

The square root of 71943433 is about 8481.9474768475. The cubic root of 71943433 is about 415.9077878239.

The spelling of 71943433 in words is "seventy-one million, nine hundred forty-three thousand, four hundred thirty-three".