40209258 has 16 divisors (see below), whose sum is σ = 80902080. Its totient is φ = 13322496.

The previous prime is 40209251. The next prime is 40209293. The reversal of 40209258 is 85290204.

40209258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40209251) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 19063 + ... + 21066.

It is an arithmetic number, because the mean of its divisors is an integer number (5056380).

Almost surely, 2^40209258 is an apocalyptic number.

40209258 is an abundant number, since it is smaller than the sum of its proper divisors (40692822).

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

40209258 is a wasteful number, since it uses less digits than its factorization.

40209258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40301.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 40209258 is about 6341.0770378541. The cubic root of 40209258 is about 342.5905292865.

The spelling of 40209258 in words is "forty million, two hundred nine thousand, two hundred fifty-eight".