40998817 has 2 divisors, whose sum is σ = 40998818. Its totient is φ = 40998816.

The previous prime is 40998799. The next prime is 40998821. The reversal of 40998817 is 71889904.

It is a happy number.

40998817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39050001 + 1948816 = 6249^2 + 1396^2 .

It is a cyclic number.

It is not a de Polignac number, because 40998817 - 2¹⁹ = 40474529 is a prime.

It is not a weakly prime, because it can be changed into another prime (40998317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20499408 + 20499409.

It is an arithmetic number, because the mean of its divisors is an integer number (20499409).

Almost surely, 2^40998817 is an apocalyptic number.

It is an amenable number.

40998817 is a deficient number, since it is larger than the sum of its proper divisors (1).

40998817 is an equidigital number, since it uses as much as digits as its factorization.

40998817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 40998817 is about 6403.0318599863. The cubic root of 40998817 is about 344.8184075503.

The spelling of 40998817 in words is "forty million, nine hundred ninety-eight thousand, eight hundred seventeen".