393898894 has 8 divisors (see below), whose sum is σ = 591631128. Its totient is φ = 196688520.

The previous prime is 393898853. The next prime is 393898907. The reversal of 393898894 is 498898393.

It is a happy number.

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

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, 128572 + ... + 131599.

It is an arithmetic number, because the mean of its divisors is an integer number (73953891).

Almost surely, 2^393898894 is an apocalyptic number.

393898894 is a deficient number, since it is larger than the sum of its proper divisors (197732234).

393898894 is a wasteful number, since it uses less digits than its factorization.

393898894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260930.

The product of its digits is 13436928, while the sum is 61.

The square root of 393898894 is about 19846.8862545237. The cubic root of 393898894 is about 733.0409793780.

The spelling of 393898894 in words is "three hundred ninety-three million, eight hundred ninety-eight thousand, eight hundred ninety-four".