129700808 has 8 divisors (see below), whose sum is σ = 243189030. Its totient is φ = 64850400.

The previous prime is 129700801. The next prime is 129700829. The reversal of 129700808 is 808007921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 127735204 + 1965604 = 11302^2 + 1402^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (129700801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8106293 + ... + 8106308.

Almost surely, 2^129700808 is an apocalyptic number.

It is an amenable number.

129700808 is a deficient number, since it is larger than the sum of its proper divisors (113488222).

129700808 is a wasteful number, since it uses less digits than its factorization.

129700808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16212607 (or 16212603 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 129700808 is about 11388.6262560504. The cubic root of 129700808 is about 506.1907762249.

The spelling of 129700808 in words is "one hundred twenty-nine million, seven hundred thousand, eight hundred eight".