71485039 has 4 divisors (see below), whose sum is σ = 73791040. Its totient is φ = 69179040.

The previous prime is 71485033. The next prime is 71485069. The reversal of 71485039 is 93058417.

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 71485039 - 2⁹ = 71484527 is a prime.

It is a super-3 number, since 3×71485039³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71484989 and 71485007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71485033) 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 3 ways as a sum of consecutive naturals, for example, 1152954 + ... + 1153015.

It is an arithmetic number, because the mean of its divisors is an integer number (18447760).

Almost surely, 2^71485039 is an apocalyptic number.

71485039 is a deficient number, since it is larger than the sum of its proper divisors (2306001).

71485039 is a wasteful number, since it uses less digits than its factorization.

71485039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2306000.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 71485039 is about 8454.8825538857. The cubic root of 71485039 is about 415.0225738918.

The spelling of 71485039 in words is "seventy-one million, four hundred eighty-five thousand, thirty-nine".