40009037 has 4 divisors (see below), whose sum is σ = 40557180. Its totient is φ = 39460896.

The previous prime is 40009027. The next prime is 40009051. The reversal of 40009037 is 73090004.

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 32330596 + 7678441 = 5686^2 + 2771^2 .

It is a cyclic number.

It is not a de Polignac number, because 40009037 - 2¹⁰ = 40008013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40009027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273962 + ... + 274107.

It is an arithmetic number, because the mean of its divisors is an integer number (10139295).

Almost surely, 2^40009037 is an apocalyptic number.

It is an amenable number.

40009037 is a deficient number, since it is larger than the sum of its proper divisors (548143).

40009037 is an equidigital number, since it uses as much as digits as its factorization.

40009037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548142.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 40009037 is about 6325.2697175694. The cubic root of 40009037 is about 342.0209424837.

The spelling of 40009037 in words is "forty million, nine thousand, thirty-seven".