71422439 has 8 divisors (see below), whose sum is σ = 78061968. Its totient is φ = 64807360.

The previous prime is 71422433. The next prime is 71422487. The reversal of 71422439 is 93422417.

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

It is a cyclic number.

It is not a de Polignac number, because 71422439 - 2¹⁶ = 71356903 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 (71422433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299 + ... + 11955.

It is an arithmetic number, because the mean of its divisors is an integer number (9757746).

Almost surely, 2^71422439 is an apocalyptic number.

71422439 is a deficient number, since it is larger than the sum of its proper divisors (6639529).

71422439 is a wasteful number, since it uses less digits than its factorization.

71422439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12225.

The product of its digits is 12096, while the sum is 32.

The square root of 71422439 is about 8451.1797401310. The cubic root of 71422439 is about 414.9013923554.

The spelling of 71422439 in words is "seventy-one million, four hundred twenty-two thousand, four hundred thirty-nine".