129460647 has 4 divisors (see below), whose sum is σ = 172614200. Its totient is φ = 86307096.

The previous prime is 129460637. The next prime is 129460651. The reversal of 129460647 is 746064921.

It is a happy number.

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

It is not a de Polignac number, because 129460647 - 2¹⁹ = 128936359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129460637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21576772 + ... + 21576777.

It is an arithmetic number, because the mean of its divisors is an integer number (43153550).

Almost surely, 2^129460647 is an apocalyptic number.

129460647 is a deficient number, since it is larger than the sum of its proper divisors (43153553).

129460647 is an equidigital number, since it uses as much as digits as its factorization.

129460647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43153552.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 129460647 is about 11378.0774738090. The cubic root of 129460647 is about 505.8781531563.

The spelling of 129460647 in words is "one hundred twenty-nine million, four hundred sixty thousand, six hundred forty-seven".