129548493 has 12 divisors (see below), whose sum is σ = 187242588. Its totient is φ = 86311680.

The previous prime is 129548491. The next prime is 129548513. The reversal of 129548493 is 394845921.

129548493 is a `hidden beast` number, since 12 + 9 + 548 + 4 + 93 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 66536649 + 63011844 = 8157^2 + 7938^2 .

It is not a de Polignac number, because 129548493 - 2¹ = 129548491 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129548491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15271 + ... + 22187.

It is an arithmetic number, because the mean of its divisors is an integer number (15603549).

Almost surely, 2^129548493 is an apocalyptic number.

It is an amenable number.

129548493 is a deficient number, since it is larger than the sum of its proper divisors (57694095).

129548493 is a wasteful number, since it uses less digits than its factorization.

129548493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9004 (or 9001 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 129548493 is about 11381.9371374121. The cubic root of 129548493 is about 505.9925491151.

The spelling of 129548493 in words is "one hundred twenty-nine million, five hundred forty-eight thousand, four hundred ninety-three".