40040213 has 8 divisors (see below), whose sum is σ = 41541600. Its totient is φ = 38546928.

The previous prime is 40040197. The next prime is 40040227. The reversal of 40040213 is 31204004.

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 40040213 - 2⁴ = 40040197 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 (40040293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9170 + ... + 12812.

It is an arithmetic number, because the mean of its divisors is an integer number (5192700).

Almost surely, 2^40040213 is an apocalyptic number.

It is an amenable number.

40040213 is a deficient number, since it is larger than the sum of its proper divisors (1501387).

40040213 is a wasteful number, since it uses less digits than its factorization.

40040213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4051.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 40040213 is about 6327.7336385155. The cubic root of 40040213 is about 342.1097563894.

Adding to 40040213 its reverse (31204004), we get a palindrome (71244217).

The spelling of 40040213 in words is "forty million, forty thousand, two hundred thirteen".