1428839998 has 8 divisors (see below), whose sum is σ = 2167341840. Its totient is φ = 706392720.

The previous prime is 1428839927. The next prime is 1428840011. The reversal of 1428839998 is 8999388241.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4013418 + ... + 4013773.

It is an arithmetic number, because the mean of its divisors is an integer number (270917730).

Almost surely, 2^1428839998 is an apocalyptic number.

1428839998 is a deficient number, since it is larger than the sum of its proper divisors (738501842).

1428839998 is an equidigital number, since it uses as much as digits as its factorization.

1428839998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8027282.

The product of its digits is 8957952, while the sum is 61.

The square root of 1428839998 is about 37799.9999735450. Note that the first 4 decimals coincide. The cubic root of 1428839998 is about 1126.3184536962.

It can be divided in two parts, 142883 and 9998, that added together give a square (152881 = 391²).

The spelling of 1428839998 in words is "one billion, four hundred twenty-eight million, eight hundred thirty-nine thousand, nine hundred ninety-eight".