92089721 has 2 divisors, whose sum is σ = 92089722. Its totient is φ = 92089720.

The previous prime is 92089717. The next prime is 92089727. The reversal of 92089721 is 12798029.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85303696 + 6786025 = 9236^2 + 2605^2 .

It is an emirp because it is prime and its reverse (12798029) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 92089721 - 2² = 92089717 is a prime.

It is not a weakly prime, because it can be changed into another prime (92089727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46044860 + 46044861.

It is an arithmetic number, because the mean of its divisors is an integer number (46044861).

Almost surely, 2^92089721 is an apocalyptic number.

It is an amenable number.

92089721 is a deficient number, since it is larger than the sum of its proper divisors (1).

92089721 is an equidigital number, since it uses as much as digits as its factorization.

92089721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 92089721 is about 9596.3389373240. The cubic root of 92089721 is about 451.5824468330.

The spelling of 92089721 in words is "ninety-two million, eighty-nine thousand, seven hundred twenty-one".