129963338 has 4 divisors (see below), whose sum is σ = 194945010. Its totient is φ = 64981668.

The previous prime is 129963293. The next prime is 129963341. The reversal of 129963338 is 833369921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 126855169 + 3108169 = 11263^2 + 1763^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32490833 + ... + 32490836.

Almost surely, 2^129963338 is an apocalyptic number.

129963338 is a deficient number, since it is larger than the sum of its proper divisors (64981672).

129963338 is an equidigital number, since it uses as much as digits as its factorization.

129963338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64981671.

The product of its digits is 209952, while the sum is 44.

The square root of 129963338 is about 11400.1464025687. The cubic root of 129963338 is about 506.5320763429.

The spelling of 129963338 in words is "one hundred twenty-nine million, nine hundred sixty-three thousand, three hundred thirty-eight".