129439070 has 16 divisors (see below), whose sum is σ = 235254240. Its totient is φ = 51272544.

The previous prime is 129439069. The next prime is 129439111. The reversal of 129439070 is 70934921.

It is a self number, because there is not a number n which added to its sum of digits gives 129439070.

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 7 ways as a sum of consecutive naturals, for example, 61805 + ... + 63864.

It is an arithmetic number, because the mean of its divisors is an integer number (14703390).

Almost surely, 2^129439070 is an apocalyptic number.

129439070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129439070 is a deficient number, since it is larger than the sum of its proper divisors (105815170).

129439070 is a wasteful number, since it uses less digits than its factorization.

129439070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125779.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 129439070 is about 11377.1292512655. The cubic root of 129439070 is about 505.8500469592.

The spelling of 129439070 in words is "one hundred twenty-nine million, four hundred thirty-nine thousand, seventy".