8428279429 has 4 divisors (see below), whose sum is σ = 8441306784. Its totient is φ = 8415252076.

The previous prime is 8428279427. The next prime is 8428279451. The reversal of 8428279429 is 9249728248.

It is a happy number.

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 8428279429 - 2¹ = 8428279427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8428279429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8428279427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6512707 + ... + 6514000.

It is an arithmetic number, because the mean of its divisors is an integer number (2110326696).

Almost surely, 2^8428279429 is an apocalyptic number.

It is an amenable number.

8428279429 is a deficient number, since it is larger than the sum of its proper divisors (13027355).

8428279429 is a wasteful number, since it uses less digits than its factorization.

8428279429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13027354.

The product of its digits is 4644864, while the sum is 55.

The square root of 8428279429 is about 91805.6612034356. The cubic root of 8428279429 is about 2035.0713575422.

The spelling of 8428279429 in words is "eight billion, four hundred twenty-eight million, two hundred seventy-nine thousand, four hundred twenty-nine".