402393 has 8 divisors (see below), whose sum is σ = 541728. Its totient is φ = 265664.

The previous prime is 402383. The next prime is 402403. The reversal of 402393 is 393204.

402393 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (402383) and next prime (402403).

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

It is a cyclic number.

It is not a de Polignac number, because 402393 - 2⁵ = 402361 is a prime.

402393 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (402313) 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, 255 + ... + 932.

It is an arithmetic number, because the mean of its divisors is an integer number (67716).

2⁴⁰²³⁹³ is an apocalyptic number.

It is an amenable number.

402393 is a deficient number, since it is larger than the sum of its proper divisors (139335).

402393 is a wasteful number, since it uses less digits than its factorization.

402393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303.

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

The square root of 402393 is about 634.3445436039. The cubic root of 402393 is about 73.8272693932.

Adding to 402393 its reverse (393204), we get a palindrome (795597).

The spelling of 402393 in words is "four hundred two thousand, three hundred ninety-three".