8404002 has 24 divisors (see below), whose sum is σ = 18268380. Its totient is φ = 2792160.

The previous prime is 8403977. The next prime is 8404013. The reversal of 8404002 is 2004048.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5022081 + 3381921 = 2241^2 + 1839^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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 in 11 ways as a sum of consecutive naturals, for example, 7024 + ... + 8132.

Almost surely, 2^8404002 is an apocalyptic number.

8404002 is an abundant number, since it is smaller than the sum of its proper divisors (9864378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8404002 is a wasteful number, since it uses less digits than its factorization.

8404002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538 (or 1535 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 8404002 is about 2898.9656776168. The cubic root of 8404002 is about 203.3115489218.

The spelling of 8404002 in words is "eight million, four hundred four thousand, two".