397402 has 4 divisors (see below), whose sum is σ = 596106. Its totient is φ = 198700.

The previous prime is 397379. The next prime is 397427. The reversal of 397402 is 204793.

397402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 221841 + 175561 = 471^2 + 419^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 99349 + ... + 99352.

2³⁹⁷⁴⁰² is an apocalyptic number.

397402 is a deficient number, since it is larger than the sum of its proper divisors (198704).

397402 is a wasteful number, since it uses less digits than its factorization.

397402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198703.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 397402 is about 630.3982867997. The cubic root of 397402 is about 73.5207647996.

The spelling of 397402 in words is "three hundred ninety-seven thousand, four hundred two".