406213858 has 8 divisors (see below), whose sum is σ = 613356480. Its totient is φ = 201761700.

The previous prime is 406213853. The next prime is 406213859. The reversal of 406213858 is 858312604.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (406213853) 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 3 ways as a sum of consecutive naturals, for example, 672238 + ... + 672841.

It is an arithmetic number, because the mean of its divisors is an integer number (76669560).

Almost surely, 2^406213858 is an apocalyptic number.

406213858 is a deficient number, since it is larger than the sum of its proper divisors (207142622).

406213858 is a wasteful number, since it uses less digits than its factorization.

406213858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345232.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 406213858 is about 20154.7477781291. The cubic root of 406213858 is about 740.6020532643.

The spelling of 406213858 in words is "four hundred six million, two hundred thirteen thousand, eight hundred fifty-eight".