129958894 has 8 divisors (see below), whose sum is σ = 209933640. Its totient is φ = 59981016.

The previous prime is 129958891. The next prime is 129958903. The reversal of 129958894 is 498859921.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129958891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2499184 + ... + 2499235.

It is an arithmetic number, because the mean of its divisors is an integer number (26241705).

Almost surely, 2^129958894 is an apocalyptic number.

129958894 is a deficient number, since it is larger than the sum of its proper divisors (79974746).

129958894 is a wasteful number, since it uses less digits than its factorization.

129958894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4998434.

The product of its digits is 1866240, while the sum is 55.

The square root of 129958894 is about 11399.9514911249. The cubic root of 129958894 is about 506.5263027808.

The spelling of 129958894 in words is "one hundred twenty-nine million, nine hundred fifty-eight thousand, eight hundred ninety-four".