40909290 has 32 divisors (see below), whose sum is σ = 98378496. Its totient is φ = 10887360.

The previous prime is 40909279. The next prime is 40909301. The reversal of 40909290 is 9290904.

It is a happy number.

40909290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40909279) and next prime (40909301).

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 18799 + ... + 20861.

It is an arithmetic number, because the mean of its divisors is an integer number (3074328).

Almost surely, 2^40909290 is an apocalyptic number.

40909290 is an abundant number, since it is smaller than the sum of its proper divisors (57469206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40909290 is a wasteful number, since it uses less digits than its factorization.

40909290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 40909290 is about 6396.0370543017. The cubic root of 40909290 is about 344.5672372542.

The spelling of 40909290 in words is "forty million, nine hundred nine thousand, two hundred ninety".