129489714 has 48 divisors (see below), whose sum is σ = 305120088. Its totient is φ = 39522816.

The previous prime is 129489713. The next prime is 129489721. The reversal of 129489714 is 417984921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 127577025 + 1912689 = 11295^2 + 1383^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 129489714.

It is not an unprimeable number, because it can be changed into a prime (129489713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5604 + ... + 17040.

Almost surely, 2^129489714 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129489714, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152560044).

129489714 is an abundant number, since it is smaller than the sum of its proper divisors (175630374).

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

129489714 is a wasteful number, since it uses less digits than its factorization.

129489714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11499 (or 11496 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 129489714 is about 11379.3547268727. The cubic root of 129489714 is about 505.9160108896.

The spelling of 129489714 in words is "one hundred twenty-nine million, four hundred eighty-nine thousand, seven hundred fourteen".