905402 has 4 divisors (see below), whose sum is σ = 1358106. Its totient is φ = 452700.

The previous prime is 905381. The next prime is 905413. The reversal of 905402 is 204509.

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., 674041 + 231361 = 821^2 + 481^2 .

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 as a sum of consecutive naturals, namely, 226349 + ... + 226352.

2⁹⁰⁵⁴⁰² is an apocalyptic number.

905402 is a deficient number, since it is larger than the sum of its proper divisors (452704).

905402 is a wasteful number, since it uses less digits than its factorization.

905402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452703.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 905402 is about 951.5261425731. The cubic root of 905402 is about 96.7417226570.

The spelling of 905402 in words is "nine hundred five thousand, four hundred two".