393943402 has 8 divisors (see below), whose sum is σ = 616607136. Its totient is φ = 188407692.

The previous prime is 393943399. The next prime is 393943409. The reversal of 393943402 is 204349393.

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

It is not an unprimeable number, because it can be changed into a prime (393943409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4281948 + ... + 4282039.

It is an arithmetic number, because the mean of its divisors is an integer number (77075892).

Almost surely, 2^393943402 is an apocalyptic number.

393943402 is a deficient number, since it is larger than the sum of its proper divisors (222663734).

393943402 is a wasteful number, since it uses less digits than its factorization.

393943402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8564012.

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 393943402 is about 19848.0075070522. The cubic root of 393943402 is about 733.0685879511.

The spelling of 393943402 in words is "three hundred ninety-three million, nine hundred forty-three thousand, four hundred two".