129823948 has 6 divisors (see below), whose sum is σ = 227191916. Its totient is φ = 64911972.

The previous prime is 129823943. The next prime is 129823961. The reversal of 129823948 is 849328921.

It is a junction number, because it is equal to n+sod(n) for n = 129823898 and 129823907.

It is not an unprimeable number, because it can be changed into a prime (129823943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16227990 + ... + 16227997.

Almost surely, 2^129823948 is an apocalyptic number.

It is an amenable number.

129823948 is a deficient number, since it is larger than the sum of its proper divisors (97367968).

129823948 is a wasteful number, since it uses less digits than its factorization.

129823948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32455991 (or 32455989 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 129823948 is about 11394.0312444718. The cubic root of 129823948 is about 506.3509207327.

The spelling of 129823948 in words is "one hundred twenty-nine million, eight hundred twenty-three thousand, nine hundred forty-eight".