40413213 has 24 divisors (see below), whose sum is σ = 60412248. Its totient is φ = 26013312.

The previous prime is 40413179. The next prime is 40413229. The reversal of 40413213 is 31231404.

40413213 is a `hidden beast` number, since 40 + 413 + 213 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2442969 + 37970244 = 1563^2 + 6162^2 .

It is not a de Polignac number, because 40413213 - 2¹⁶ = 40347677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40413283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51895 + ... + 52667.

It is an arithmetic number, because the mean of its divisors is an integer number (2517177).

Almost surely, 2^40413213 is an apocalyptic number.

It is an amenable number.

40413213 is a deficient number, since it is larger than the sum of its proper divisors (19999035).

40413213 is a wasteful number, since it uses less digits than its factorization.

40413213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973 (or 970 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40413213 is about 6357.1387431768. The cubic root of 40413213 is about 343.1687977974.

Adding to 40413213 its reverse (31231404), we get a palindrome (71644617).

The spelling of 40413213 in words is "forty million, four hundred thirteen thousand, two hundred thirteen".