71239383 has 6 divisors (see below), whose sum is σ = 102901344. Its totient is φ = 47492916.

The previous prime is 71239351. The next prime is 71239397. The reversal of 71239383 is 38393217.

It is a happy number.

It is not a de Polignac number, because 71239383 - 2⁵ = 71239351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71235383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3957735 + ... + 3957752.

It is an arithmetic number, because the mean of its divisors is an integer number (17150224).

Almost surely, 2^71239383 is an apocalyptic number.

71239383 is a deficient number, since it is larger than the sum of its proper divisors (31661961).

71239383 is a wasteful number, since it uses less digits than its factorization.

71239383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7915493 (or 7915490 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 71239383 is about 8440.3425878337. The cubic root of 71239383 is about 414.5466244432.

The spelling of 71239383 in words is "seventy-one million, two hundred thirty-nine thousand, three hundred eighty-three".