87009565739 has 4 divisors (see below), whose sum is σ = 89033044056. Its totient is φ = 84986087424.

The previous prime is 87009565723. The next prime is 87009565759. The reversal of 87009565739 is 93756590078.

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 87009565739 - 2⁴ = 87009565723 is a prime.

It is a super-2 number, since 2×87009565739² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87009565759) 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, 1011739094 + ... + 1011739179.

It is an arithmetic number, because the mean of its divisors is an integer number (22258261014).

Almost surely, 2^87009565739 is an apocalyptic number.

87009565739 is a deficient number, since it is larger than the sum of its proper divisors (2023478317).

87009565739 is a wasteful number, since it uses less digits than its factorization.

87009565739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023478316.

The product of its (nonzero) digits is 14288400, while the sum is 59.

The spelling of 87009565739 in words is "eighty-seven billion, nine million, five hundred sixty-five thousand, seven hundred thirty-nine".