406116813 has 4 divisors (see below), whose sum is σ = 541489088. Its totient is φ = 270744540.

The previous prime is 406116769. The next prime is 406116817. The reversal of 406116813 is 318611604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 406116813 - 2⁶ = 406116749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406116817) 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, 67686133 + ... + 67686138.

It is an arithmetic number, because the mean of its divisors is an integer number (135372272).

Almost surely, 2^406116813 is an apocalyptic number.

It is an amenable number.

406116813 is a deficient number, since it is larger than the sum of its proper divisors (135372275).

406116813 is a wasteful number, since it uses less digits than its factorization.

406116813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135372274.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 406116813 is about 20152.3401370660. The cubic root of 406116813 is about 740.5430716474.

The spelling of 406116813 in words is "four hundred six million, one hundred sixteen thousand, eight hundred thirteen".