814404002 has 4 divisors (see below), whose sum is σ = 1221606006. Its totient is φ = 407202000.

The previous prime is 814404001. The next prime is 814404029. The reversal of 814404002 is 200404418.

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., 665588401 + 148815601 = 25799^2 + 12199^2 .

It is not an unprimeable number, because it can be changed into a prime (814404001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203600999 + ... + 203601002.

Almost surely, 2^814404002 is an apocalyptic number.

814404002 is a deficient number, since it is larger than the sum of its proper divisors (407202004).

814404002 is a wasteful number, since it uses less digits than its factorization.

814404002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407202003.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 814404002 is about 28537.7644884809. The cubic root of 814404002 is about 933.8561137855.

The spelling of 814404002 in words is "eight hundred fourteen million, four hundred four thousand, two".