402398 has 8 divisors (see below), whose sum is σ = 607608. Its totient is φ = 199864.

The previous prime is 402383. The next prime is 402403. The reversal of 402398 is 893204.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236 + ... + 927.

It is an arithmetic number, because the mean of its divisors is an integer number (75951).

2⁴⁰²³⁹⁸ is an apocalyptic number.

402398 is a deficient number, since it is larger than the sum of its proper divisors (205210).

402398 is a wasteful number, since it uses less digits than its factorization.

402398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 402398 is about 634.3484846675. The cubic root of 402398 is about 73.8275751762.

The spelling of 402398 in words is "four hundred two thousand, three hundred ninety-eight".