393338448 has 30 divisors (see below), whose sum is σ = 1100801754. Its totient is φ = 131112768.

The previous prime is 393338443. The next prime is 393338467. The reversal of 393338448 is 844833393.

It can be written as a sum of positive squares in only one way, i.e., 390141504 + 3196944 = 19752^2 + 1788^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393338443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1365615 + ... + 1365902.

Almost surely, 2^393338448 is an apocalyptic number.

It is an amenable number.

393338448 is an abundant number, since it is smaller than the sum of its proper divisors (707463306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

393338448 is a wasteful number, since it uses less digits than its factorization.

393338448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731531 (or 2731522 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 393338448 is about 19832.7619861682. The cubic root of 393338448 is about 732.6931533323.

The spelling of 393338448 in words is "three hundred ninety-three million, three hundred thirty-eight thousand, four hundred forty-eight".