393402 has 16 divisors (see below), whose sum is σ = 793440. Its totient is φ = 130032.

The previous prime is 393401. The next prime is 393403. The reversal of 393402 is 204393.

It is an interprime number because it is at equal distance from previous prime (393401) and next prime (393403).

It is not an unprimeable number, because it can be changed into a prime (393401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849 + ... + 1227.

It is an arithmetic number, because the mean of its divisors is an integer number (49590).

2³⁹³⁴⁰² is an apocalyptic number.

393402 is an abundant number, since it is smaller than the sum of its proper divisors (400038).

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

393402 is a wasteful number, since it uses less digits than its factorization.

393402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 393402 is about 627.2176655675. The cubic root of 393402 is about 73.2732611809.

Adding to 393402 its reverse (204393), we get a palindrome (597795).

The spelling of 393402 in words is "three hundred ninety-three thousand, four hundred two".