402946 has 4 divisors (see below), whose sum is σ = 604422. Its totient is φ = 201472.

The previous prime is 402943. The next prime is 402947. The reversal of 402946 is 649204.

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., 390625 + 12321 = 625^2 + 111^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 402946.

It is not an unprimeable number, because it can be changed into a prime (402943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100735 + ... + 100738.

2⁴⁰²⁹⁴⁶ is an apocalyptic number.

402946 is a deficient number, since it is larger than the sum of its proper divisors (201476).

402946 is a wasteful number, since it uses less digits than its factorization.

402946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201475.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 402946 is about 634.7802769463. The cubic root of 402946 is about 73.8610736525.

The spelling of 402946 in words is "four hundred two thousand, nine hundred forty-six".