8404249 has 4 divisors (see below), whose sum is σ = 9604864. Its totient is φ = 7203636.

The previous prime is 8404247. The next prime is 8404259. The reversal of 8404249 is 9424048.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8404249 - 2¹ = 8404247 is a prime.

It is a Duffinian number.

8404249 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8404249.

It is not an unprimeable number, because it can be changed into a prime (8404241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600297 + ... + 600310.

It is an arithmetic number, because the mean of its divisors is an integer number (2401216).

Almost surely, 2^8404249 is an apocalyptic number.

It is an amenable number.

8404249 is a deficient number, since it is larger than the sum of its proper divisors (1200615).

8404249 is a wasteful number, since it uses less digits than its factorization.

8404249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200614.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 8404249 is about 2899.0082787050. The cubic root of 8404249 is about 203.3135407292.

The spelling of 8404249 in words is "eight million, four hundred four thousand, two hundred forty-nine".