92077981 has 2 divisors, whose sum is σ = 92077982. Its totient is φ = 92077980.

The previous prime is 92077957. The next prime is 92077991. The reversal of 92077981 is 18977029.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72097081 + 19980900 = 8491^2 + 4470^2 .

It is a cyclic number.

It is not a de Polignac number, because 92077981 - 2⁵ = 92077949 is a prime.

It is a super-2 number, since 2×92077981² = 16956709170072722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (92077991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46038990 + 46038991.

It is an arithmetic number, because the mean of its divisors is an integer number (46038991).

Almost surely, 2^92077981 is an apocalyptic number.

It is an amenable number.

92077981 is a deficient number, since it is larger than the sum of its proper divisors (1).

92077981 is an equidigital number, since it uses as much as digits as its factorization.

92077981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 92077981 is about 9595.7272262190. The cubic root of 92077981 is about 451.5632561164.

The spelling of 92077981 in words is "ninety-two million, seventy-seven thousand, nine hundred eighty-one".