405994113 has 40 divisors (see below), whose sum is σ = 717055680. Its totient is φ = 223987680.

The previous prime is 405994111. The next prime is 405994129. The reversal of 405994113 is 311499504.

It is a happy number.

It is not a de Polignac number, because 405994113 - 2¹ = 405994111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405994111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4098 + ... + 28788.

It is an arithmetic number, because the mean of its divisors is an integer number (17926392).

Almost surely, 2^405994113 is an apocalyptic number.

It is an amenable number.

405994113 is a deficient number, since it is larger than the sum of its proper divisors (311061567).

405994113 is a wasteful number, since it uses less digits than its factorization.

405994113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24739 (or 24730 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 405994113 is about 20149.2955956282. The cubic root of 405994113 is about 740.4684840866.

The spelling of 405994113 in words is "four hundred five million, nine hundred ninety-four thousand, one hundred thirteen".