1029979804 has 72 divisors (see below), whose sum is σ = 2174837280. Its totient is φ = 425222784.

The previous prime is 1029979777. The next prime is 1029979861. The reversal of 1029979804 is 4089799201.

It is a Harshad number since it is a multiple of its sum of digits (49).

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 23 ways as a sum of consecutive naturals, for example, 789817 + ... + 791119.

Almost surely, 2^1029979804 is an apocalyptic number.

1029979804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1029979804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1087418640).

1029979804 is an abundant number, since it is smaller than the sum of its proper divisors (1144857476).

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

1029979804 is a wasteful number, since it uses less digits than its factorization.

1029979804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1458 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 1029979804 is about 32093.2984281766. The cubic root of 1029979804 is about 1009.8950333682.

The spelling of 1029979804 in words is "one billion, twenty-nine million, nine hundred seventy-nine thousand, eight hundred four".