129773948 has 12 divisors (see below), whose sum is σ = 233242632. Its totient is φ = 63133200.

The previous prime is 129773879. The next prime is 129773953. The reversal of 129773948 is 849377921.

It is a junction number, because it is equal to n+sod(n) for n = 129773896 and 129773905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438278 + ... + 438573.

It is an arithmetic number, because the mean of its divisors is an integer number (19436886).

Almost surely, 2^129773948 is an apocalyptic number.

It is an amenable number.

129773948 is a deficient number, since it is larger than the sum of its proper divisors (103468684).

129773948 is a wasteful number, since it uses less digits than its factorization.

129773948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876892 (or 876890 counting only the distinct ones).

The product of its digits is 762048, while the sum is 50.

The square root of 129773948 is about 11391.8369019224. The cubic root of 129773948 is about 506.2859075684.

The spelling of 129773948 in words is "one hundred twenty-nine million, seven hundred seventy-three thousand, nine hundred forty-eight".