92487857921 has 2 divisors, whose sum is σ = 92487857922. Its totient is φ = 92487857920.

The previous prime is 92487857909. The next prime is 92487857923. The reversal of 92487857921 is 12975878429.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89901626896 + 2586231025 = 299836^2 + 50855^2 .

It is a cyclic number.

It is not a de Polignac number, because 92487857921 - 2⁶ = 92487857857 is a prime.

Together with 92487857923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (92487857923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46243928960 + 46243928961.

It is an arithmetic number, because the mean of its divisors is an integer number (46243928961).

Almost surely, 2^92487857921 is an apocalyptic number.

It is an amenable number.

92487857921 is a deficient number, since it is larger than the sum of its proper divisors (1).

92487857921 is an equidigital number, since it uses as much as digits as its factorization.

92487857921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 62.

The spelling of 92487857921 in words is "ninety-two billion, four hundred eighty-seven million, eight hundred fifty-seven thousand, nine hundred twenty-one".