40809284 has 6 divisors (see below), whose sum is σ = 71416254. Its totient is φ = 20404640.

The previous prime is 40809257. The next prime is 40809313. The reversal of 40809284 is 48290804.

40809284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 31024900 + 9784384 = 5570^2 + 3128^2 .

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 as a sum of consecutive naturals, namely, 5101157 + ... + 5101164.

It is an arithmetic number, because the mean of its divisors is an integer number (11902709).

Almost surely, 2^40809284 is an apocalyptic number.

It is an amenable number.

40809284 is a deficient number, since it is larger than the sum of its proper divisors (30606970).

40809284 is a wasteful number, since it uses less digits than its factorization.

40809284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10202325 (or 10202323 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 40809284 is about 6388.2144610212. The cubic root of 40809284 is about 344.2862341828.

The spelling of 40809284 in words is "forty million, eight hundred nine thousand, two hundred eighty-four".