40209248 has 24 divisors (see below), whose sum is σ = 80463600. Its totient is φ = 19774080.

The previous prime is 40209241. The next prime is 40209251. The reversal of 40209248 is 84290204.

It is a self number, because there is not a number n which added to its sum of digits gives 40209248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40209241) 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 3 ways as a sum of consecutive naturals, for example, 8348 + ... + 12251.

It is an arithmetic number, because the mean of its divisors is an integer number (3352650).

Almost surely, 2^40209248 is an apocalyptic number.

It is an amenable number.

40209248 is an abundant number, since it is smaller than the sum of its proper divisors (40254352).

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

40209248 is a wasteful number, since it uses less digits than its factorization.

40209248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20670 (or 20662 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 40209248 is about 6341.0762493444. The cubic root of 40209248 is about 342.5905008858.

The spelling of 40209248 in words is "forty million, two hundred nine thousand, two hundred forty-eight".