129448798 has 4 divisors (see below), whose sum is σ = 194173200. Its totient is φ = 64724398.

The previous prime is 129448751. The next prime is 129448799. The reversal of 129448798 is 897844921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129448799) 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 as a sum of consecutive naturals, namely, 32362198 + ... + 32362201.

It is an arithmetic number, because the mean of its divisors is an integer number (48543300).

Almost surely, 2^129448798 is an apocalyptic number.

129448798 is a deficient number, since it is larger than the sum of its proper divisors (64724402).

129448798 is an equidigital number, since it uses as much as digits as its factorization.

129448798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64724401.

The product of its digits is 1161216, while the sum is 52.

The square root of 129448798 is about 11377.5567676017. The cubic root of 129448798 is about 505.8627190372.

The spelling of 129448798 in words is "one hundred twenty-nine million, four hundred forty-eight thousand, seven hundred ninety-eight".