404402 has 4 divisors (see below), whose sum is σ = 606606. Its totient is φ = 202200.

The previous prime is 404399. The next prime is 404419. The reversal of 404402 is 204404.

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., 398161 + 6241 = 631^2 + 79^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101099 + ... + 101102.

2⁴⁰⁴⁴⁰² is an apocalyptic number.

404402 is a deficient number, since it is larger than the sum of its proper divisors (202204).

404402 is a wasteful number, since it uses less digits than its factorization.

404402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202203.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 404402 is about 635.9260963351. The cubic root of 404402 is about 73.9499296057.

Adding to 404402 its reverse (204404), we get a palindrome (608806).

The spelling of 404402 in words is "four hundred four thousand, four hundred two", and thus it is an iban number.