87044377439 has 4 divisors (see below), whose sum is σ = 87565601424. Its totient is φ = 86523153456.

The previous prime is 87044377423. The next prime is 87044377451. The reversal of 87044377439 is 93477344078.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93477344078 = 2 ⋅46738672039.

It is a cyclic number.

It is not a de Polignac number, because 87044377439 - 2⁴ = 87044377423 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 (87044377139) 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, 260611742 + ... + 260612075.

It is an arithmetic number, because the mean of its divisors is an integer number (21891400356).

Almost surely, 2^87044377439 is an apocalyptic number.

87044377439 is a deficient number, since it is larger than the sum of its proper divisors (521223985).

87044377439 is a wasteful number, since it uses less digits than its factorization.

87044377439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521223984.

The product of its (nonzero) digits is 14224896, while the sum is 56.

The spelling of 87044377439 in words is "eighty-seven billion, forty-four million, three hundred seventy-seven thousand, four hundred thirty-nine".