87961089839 has 8 divisors (see below), whose sum is σ = 100927467648. Its totient is φ = 75094839000.

The previous prime is 87961089809. The next prime is 87961089847. The reversal of 87961089839 is 93898016978.

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 87961089839 - 2²⁸ = 87692654383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87961089809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25029857 + ... + 25033370.

It is an arithmetic number, because the mean of its divisors is an integer number (12615933456).

Almost surely, 2^87961089839 is an apocalyptic number.

87961089839 is a deficient number, since it is larger than the sum of its proper divisors (12966377809).

87961089839 is a wasteful number, since it uses less digits than its factorization.

87961089839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50063485.

The product of its (nonzero) digits is 47029248, while the sum is 68.

The spelling of 87961089839 in words is "eighty-seven billion, nine hundred sixty-one million, eighty-nine thousand, eight hundred thirty-nine".