393442059406 has 8 divisors (see below), whose sum is σ = 643814279064. Its totient is φ = 178837299720.

The previous prime is 393442059403. The next prime is 393442059457. The reversal of 393442059406 is 604950244393.

It is a happy number.

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

It is a super-4 number, since 4×393442059406⁴ (a number of 47 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 393442059406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393442059403) 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, 8941864965 + ... + 8941865008.

It is an arithmetic number, because the mean of its divisors is an integer number (80476784883).

Almost surely, 2^393442059406 is an apocalyptic number.

393442059406 is a deficient number, since it is larger than the sum of its proper divisors (250372219658).

393442059406 is a wasteful number, since it uses less digits than its factorization.

393442059406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17883729986.

The product of its (nonzero) digits is 2799360, while the sum is 49.

The spelling of 393442059406 in words is "three hundred ninety-three billion, four hundred forty-two million, fifty-nine thousand, four hundred six".