40286537 has 4 divisors (see below), whose sum is σ = 40318356. Its totient is φ = 40254720.

The previous prime is 40286531. The next prime is 40286551. The reversal of 40286537 is 73568204.

It is a happy number.

40286537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34386496 + 5900041 = 5864^2 + 2429^2 .

It is a cyclic number.

It is not a de Polignac number, because 40286537 - 2¹² = 40282441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40286497 and 40286506.

It is not an unprimeable number, because it can be changed into a prime (40286531) 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 3 ways as a sum of consecutive naturals, for example, 13928 + ... + 16569.

It is an arithmetic number, because the mean of its divisors is an integer number (10079589).

Almost surely, 2^40286537 is an apocalyptic number.

It is an amenable number.

40286537 is a deficient number, since it is larger than the sum of its proper divisors (31819).

40286537 is a wasteful number, since it uses less digits than its factorization.

40286537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31818.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 40286537 is about 6347.1676360405. The cubic root of 40286537 is about 342.8098660921.

The spelling of 40286537 in words is "forty million, two hundred eighty-six thousand, five hundred thirty-seven".