71940383 has 4 divisors (see below), whose sum is σ = 72398760. Its totient is φ = 71482008.

The previous prime is 71940373. The next prime is 71940397. The reversal of 71940383 is 38304917.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71940383 - 2¹² = 71936287 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 (71940313) 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, 228953 + ... + 229266.

It is an arithmetic number, because the mean of its divisors is an integer number (18099690).

Almost surely, 2^71940383 is an apocalyptic number.

71940383 is a deficient number, since it is larger than the sum of its proper divisors (458377).

71940383 is a wasteful number, since it uses less digits than its factorization.

71940383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458376.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 71940383 is about 8481.7676813268. The cubic root of 71940383 is about 415.9019103512.

The spelling of 71940383 in words is "seventy-one million, nine hundred forty thousand, three hundred eighty-three".