129474789 has 8 divisors (see below), whose sum is σ = 172687680. Its totient is φ = 86289216.

The previous prime is 129474769. The next prime is 129474791. The reversal of 129474789 is 987474921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129474789 - 2⁷ = 129474661 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129474739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10557 + ... + 19245.

It is an arithmetic number, because the mean of its divisors is an integer number (21585960).

Almost surely, 2^129474789 is an apocalyptic number.

It is an amenable number.

129474789 is a deficient number, since it is larger than the sum of its proper divisors (43212891).

129474789 is an equidigital number, since it uses as much as digits as its factorization.

129474789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13659.

The product of its digits is 1016064, while the sum is 51.

The square root of 129474789 is about 11378.6989150781. The cubic root of 129474789 is about 505.8965728293.

The spelling of 129474789 in words is "one hundred twenty-nine million, four hundred seventy-four thousand, seven hundred eighty-nine".