393928337 has 8 divisors (see below), whose sum is σ = 448424640. Its totient is φ = 342546160.

The previous prime is 393928333. The next prime is 393928393. The reversal of 393928337 is 733829393.

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

It is not a de Polignac number, because 393928337 - 2² = 393928333 is a prime.

It is a super-3 number, since 3×393928337³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 393928291 and 393928300.

It is not an unprimeable number, because it can be changed into a prime (393928331) 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, 778262 + ... + 778767.

It is an arithmetic number, because the mean of its divisors is an integer number (56053080).

Almost surely, 2^393928337 is an apocalyptic number.

It is an amenable number.

393928337 is a deficient number, since it is larger than the sum of its proper divisors (54496303).

393928337 is a wasteful number, since it uses less digits than its factorization.

393928337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557063.

The product of its digits is 734832, while the sum is 47.

The square root of 393928337 is about 19847.6279942970. The cubic root of 393928337 is about 733.0592432762.

The spelling of 393928337 in words is "three hundred ninety-three million, nine hundred twenty-eight thousand, three hundred thirty-seven".