40509236 has 12 divisors (see below), whose sum is σ = 71248800. Its totient is φ = 20152440.

The previous prime is 40509211. The next prime is 40509247. The reversal of 40509236 is 63290504.

40509236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40509199 and 40509208.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 24650 + ... + 26241.

It is an arithmetic number, because the mean of its divisors is an integer number (5937400).

Almost surely, 2^40509236 is an apocalyptic number.

It is an amenable number.

40509236 is a deficient number, since it is larger than the sum of its proper divisors (30739564).

40509236 is a wasteful number, since it uses less digits than its factorization.

40509236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51094 (or 51092 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 40509236 is about 6364.6866380050. The cubic root of 40509236 is about 343.4403759195.

The spelling of 40509236 in words is "forty million, five hundred nine thousand, two hundred thirty-six".