40850221 has 2 divisors, whose sum is σ = 40850222. Its totient is φ = 40850220.

The previous prime is 40850213. The next prime is 40850261. The reversal of 40850221 is 12205804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36602500 + 4247721 = 6050^2 + 2061^2 .

It is a cyclic number.

It is not a de Polignac number, because 40850221 - 2³ = 40850213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40850192 and 40850201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40850261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20425110 + 20425111.

It is an arithmetic number, because the mean of its divisors is an integer number (20425111).

Almost surely, 2^40850221 is an apocalyptic number.

It is an amenable number.

40850221 is a deficient number, since it is larger than the sum of its proper divisors (1).

40850221 is an equidigital number, since it uses as much as digits as its factorization.

40850221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 40850221 is about 6391.4177613422. The cubic root of 40850221 is about 344.4013169458.

The spelling of 40850221 in words is "forty million, eight hundred fifty thousand, two hundred twenty-one".