129849804 has 90 divisors (see below), whose sum is σ = 394922220. Its totient is φ = 37095408.

The previous prime is 129849773. The next prime is 129849823. The reversal of 129849804 is 408948921.

It is a self number, because there is not a number n which added to its sum of digits gives 129849804.

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 29 ways as a sum of consecutive naturals, for example, 11787 + ... + 19965.

Almost surely, 2^129849804 is an apocalyptic number.

129849804 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 129849804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197461110).

129849804 is an abundant number, since it is smaller than the sum of its proper divisors (265072416).

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

129849804 is a wasteful number, since it uses less digits than its factorization.

129849804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8209 (or 8191 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 129849804 is about 11395.1658171349. The cubic root of 129849804 is about 506.3845337924.

The spelling of 129849804 in words is "one hundred twenty-nine million, eight hundred forty-nine thousand, eight hundred four".