40226891 has 2 divisors, whose sum is σ = 40226892. Its totient is φ = 40226890.

The previous prime is 40226861. The next prime is 40226903. The reversal of 40226891 is 19862204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40226891 - 2¹⁸ = 39964747 is a prime.

It is not a weakly prime, because it can be changed into another prime (40226861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20113445 + 20113446.

It is an arithmetic number, because the mean of its divisors is an integer number (20113446).

Almost surely, 2^40226891 is an apocalyptic number.

40226891 is a deficient number, since it is larger than the sum of its proper divisors (1).

40226891 is an equidigital number, since it uses as much as digits as its factorization.

40226891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 40226891 is about 6342.4672644011. The cubic root of 40226891 is about 342.6406008063.

The spelling of 40226891 in words is "forty million, two hundred twenty-six thousand, eight hundred ninety-one".