87071293439 has 8 divisors (see below), whose sum is σ = 93774543072. Its totient is φ = 80368823520.

The previous prime is 87071293391. The next prime is 87071293451. The reversal of 87071293439 is 93439217078.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87071293439 is a prime.

It is a super-2 number, since 2×87071293439² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87071293469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48254 + ... + 420084.

It is an arithmetic number, because the mean of its divisors is an integer number (11721817884).

Almost surely, 2^87071293439 is an apocalyptic number.

87071293439 is a deficient number, since it is larger than the sum of its proper divisors (6703249633).

87071293439 is a wasteful number, since it uses less digits than its factorization.

87071293439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389857.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 87071293439 in words is "eighty-seven billion, seventy-one million, two hundred ninety-three thousand, four hundred thirty-nine".