80992237 has 2 divisors, whose sum is σ = 80992238. Its totient is φ = 80992236.

The previous prime is 80992211. The next prime is 80992279. The reversal of 80992237 is 73229908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71419401 + 9572836 = 8451^2 + 3094^2 .

It is a cyclic number.

It is not a de Polignac number, because 80992237 - 2¹⁹ = 80467949 is a prime.

It is equal to p_4723996 and since 80992237 and 4723996 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80992237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80992207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40496118 + 40496119.

It is an arithmetic number, because the mean of its divisors is an integer number (40496119).

Almost surely, 2^80992237 is an apocalyptic number.

It is an amenable number.

80992237 is a deficient number, since it is larger than the sum of its proper divisors (1).

80992237 is an equidigital number, since it uses as much as digits as its factorization.

80992237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 80992237 is about 8999.5687118884. The cubic root of 80992237 is about 432.6610482020.

The spelling of 80992237 in words is "eighty million, nine hundred ninety-two thousand, two hundred thirty-seven".