129744494 has 8 divisors (see below), whose sum is σ = 212309208. Its totient is φ = 58974760.

The previous prime is 129744473. The next prime is 129744497. The reversal of 129744494 is 494447921.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129744497) 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, 2948717 + ... + 2948760.

It is an arithmetic number, because the mean of its divisors is an integer number (26538651).

Almost surely, 2^129744494 is an apocalyptic number.

129744494 is a deficient number, since it is larger than the sum of its proper divisors (82564714).

129744494 is a wasteful number, since it uses less digits than its factorization.

129744494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5897490.

The product of its digits is 290304, while the sum is 44.

The square root of 129744494 is about 11390.5440607550. The cubic root of 129744494 is about 506.2476017973.

The spelling of 129744494 in words is "one hundred twenty-nine million, seven hundred forty-four thousand, four hundred ninety-four".