40009213 has 8 divisors (see below), whose sum is σ = 42134400. Its totient is φ = 37916208.

The previous prime is 40009201. The next prime is 40009253. The reversal of 40009213 is 31290004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40009213 - 2¹³ = 40001021 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 (40009253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5473 + ... + 10486.

It is an arithmetic number, because the mean of its divisors is an integer number (5266800).

Almost surely, 2^40009213 is an apocalyptic number.

It is an amenable number.

40009213 is a deficient number, since it is larger than the sum of its proper divisors (2125187).

40009213 is a wasteful number, since it uses less digits than its factorization.

40009213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16091.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 40009213 is about 6325.2836300043. The cubic root of 40009213 is about 342.0214440004.

Adding to 40009213 its reverse (31290004), we get a palindrome (71299217).

The spelling of 40009213 in words is "forty million, nine thousand, two hundred thirteen".