8404279 has 8 divisors (see below), whose sum is σ = 9186800. Its totient is φ = 7641216.

The previous prime is 8404259. The next prime is 8404283. The reversal of 8404279 is 9724048.

8404279 = T₄₆₇ + T₄₆₈ + ... + T₅₃₃.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8404279 - 2⁵ = 8404247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8404219) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3954 + ... + 5695.

It is an arithmetic number, because the mean of its divisors is an integer number (1148350).

Almost surely, 2^8404279 is an apocalyptic number.

8404279 is a deficient number, since it is larger than the sum of its proper divisors (782521).

8404279 is a wasteful number, since it uses less digits than its factorization.

8404279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9729.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 8404279 is about 2899.0134528836. The cubic root of 8404279 is about 203.3137826465.

The spelling of 8404279 in words is "eight million, four hundred four thousand, two hundred seventy-nine".