40353813 has 12 divisors (see below), whose sum is σ = 58344000. Its totient is φ = 26877096.

The previous prime is 40353811. The next prime is 40353821. The reversal of 40353813 is 31835304.

It is a happy number.

It is not a de Polignac number, because 40353813 - 2¹ = 40353811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40353811) 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 11 ways as a sum of consecutive naturals, for example, 16870 + ... + 19112.

It is an arithmetic number, because the mean of its divisors is an integer number (4862000).

Almost surely, 2^40353813 is an apocalyptic number.

It is an amenable number.

40353813 is a deficient number, since it is larger than the sum of its proper divisors (17990187).

40353813 is a wasteful number, since it uses less digits than its factorization.

40353813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4248 (or 4245 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 40353813 is about 6352.4651120648. The cubic root of 40353813 is about 343.0005836560. Note that the first 3 decimals are identical.

The spelling of 40353813 in words is "forty million, three hundred fifty-three thousand, eight hundred thirteen".