87927074789 has 2 divisors, whose sum is σ = 87927074790. Its totient is φ = 87927074788.

The previous prime is 87927074707. The next prime is 87927074791. The reversal of 87927074789 is 98747072978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60905304100 + 27021770689 = 246790^2 + 164383^2 .

It is a cyclic number.

It is not a de Polignac number, because 87927074789 - 2¹⁶ = 87927009253 is a prime.

Together with 87927074791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87927079789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43963537394 + 43963537395.

It is an arithmetic number, because the mean of its divisors is an integer number (43963537395).

Almost surely, 2^87927074789 is an apocalyptic number.

It is an amenable number.

87927074789 is a deficient number, since it is larger than the sum of its proper divisors (1).

87927074789 is an equidigital number, since it uses as much as digits as its factorization.

87927074789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 99574272, while the sum is 68.

The spelling of 87927074789 in words is "eighty-seven billion, nine hundred twenty-seven million, seventy-four thousand, seven hundred eighty-nine".