40909458 has 16 divisors (see below), whose sum is σ = 83560320. Its totient is φ = 13346256.

The previous prime is 40909447. The next prime is 40909487. The reversal of 40909458 is 85490904.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 72253 + ... + 72816.

It is an arithmetic number, because the mean of its divisors is an integer number (5222520).

Almost surely, 2^40909458 is an apocalyptic number.

40909458 is an abundant number, since it is smaller than the sum of its proper divisors (42650862).

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

40909458 is a wasteful number, since it uses less digits than its factorization.

40909458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145121.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 40909458 is about 6396.0501874204. The cubic root of 40909458 is about 344.5677089255.

The spelling of 40909458 in words is "forty million, nine hundred nine thousand, four hundred fifty-eight".