406194393 has 8 divisors (see below), whose sum is σ = 590828256. Its totient is φ = 246178400.

The previous prime is 406194367. The next prime is 406194403. The reversal of 406194393 is 393491604.

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 406194393 - 2⁵ = 406194361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406196393) 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, 6154428 + ... + 6154493.

It is an arithmetic number, because the mean of its divisors is an integer number (73853532).

Almost surely, 2^406194393 is an apocalyptic number.

It is an amenable number.

406194393 is a deficient number, since it is larger than the sum of its proper divisors (184633863).

406194393 is a wasteful number, since it uses less digits than its factorization.

406194393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12308935.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 406194393 is about 20154.2648836419. The cubic root of 406194393 is about 740.5902236586.

The spelling of 406194393 in words is "four hundred six million, one hundred ninety-four thousand, three hundred ninety-three".