40022091 has 6 divisors (see below), whose sum is σ = 57809700. Its totient is φ = 26681388.

The previous prime is 40022083. The next prime is 40022107. The reversal of 40022091 is 19022004.

It is not a de Polignac number, because 40022091 - 2³ = 40022083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40022011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2223441 + ... + 2223458.

It is an arithmetic number, because the mean of its divisors is an integer number (9634950).

Almost surely, 2^40022091 is an apocalyptic number.

40022091 is a deficient number, since it is larger than the sum of its proper divisors (17787609).

40022091 is a wasteful number, since it uses less digits than its factorization.

40022091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446905 (or 4446902 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 40022091 is about 6326.3015261684. The cubic root of 40022091 is about 342.0581362132.

Adding to 40022091 its reverse (19022004), we get a palindrome (59044095).

The spelling of 40022091 in words is "forty million, twenty-two thousand, ninety-one".