129479390 has 8 divisors (see below), whose sum is σ = 233062920. Its totient is φ = 51791752.

The previous prime is 129479381. The next prime is 129479401. The reversal of 129479390 is 93974921.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6473960 + ... + 6473979.

It is an arithmetic number, because the mean of its divisors is an integer number (29132865).

Almost surely, 2^129479390 is an apocalyptic number.

129479390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129479390 is a deficient number, since it is larger than the sum of its proper divisors (103583530).

129479390 is a wasteful number, since it uses less digits than its factorization.

129479390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12947946.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 129479390 is about 11378.9010892968. The cubic root of 129479390 is about 505.9025652509.

The spelling of 129479390 in words is "one hundred twenty-nine million, four hundred seventy-nine thousand, three hundred ninety".