40892281 has 2 divisors, whose sum is σ = 40892282. Its totient is φ = 40892280.

The previous prime is 40892263. The next prime is 40892347. The reversal of 40892281 is 18229804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32718400 + 8173881 = 5720^2 + 2859^2 .

It is a cyclic number.

It is not a de Polignac number, because 40892281 - 2¹¹ = 40890233 is a prime.

It is a super-2 number, since 2×40892281² = 3344357290765922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40892221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20446140 + 20446141.

It is an arithmetic number, because the mean of its divisors is an integer number (20446141).

Almost surely, 2^40892281 is an apocalyptic number.

It is an amenable number.

40892281 is a deficient number, since it is larger than the sum of its proper divisors (1).

40892281 is an equidigital number, since it uses as much as digits as its factorization.

40892281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 40892281 is about 6394.7072646056. The cubic root of 40892281 is about 344.5194766553.

The spelling of 40892281 in words is "forty million, eight hundred ninety-two thousand, two hundred eighty-one".