993864406 has 8 divisors (see below), whose sum is σ = 1494060120. Its totient is φ = 495844368.

The previous prime is 993864373. The next prime is 993864449. The reversal of 993864406 is 604468399.

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

It is a self number, because there is not a number n which added to its sum of digits gives 993864406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542776 + ... + 544603.

It is an arithmetic number, because the mean of its divisors is an integer number (186757515).

Almost surely, 2^993864406 is an apocalyptic number.

993864406 is a deficient number, since it is larger than the sum of its proper divisors (500195714).

993864406 is a wasteful number, since it uses less digits than its factorization.

993864406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087838.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 993864406 is about 31525.6150772669. The cubic root of 993864406 is about 997.9506048487.

The spelling of 993864406 in words is "nine hundred ninety-three million, eight hundred sixty-four thousand, four hundred six".