129850993 has 4 divisors (see below), whose sum is σ = 129907008. Its totient is φ = 129794980.

The previous prime is 129850961. The next prime is 129851003. The reversal of 129850993 is 399058921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 129850993 - 2⁵ = 129850961 is a prime.

It is a super-2 number, since 2×129850993² = 33722560766172098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129850093) 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, 24373 + ... + 29218.

It is an arithmetic number, because the mean of its divisors is an integer number (32476752).

Almost surely, 2^129850993 is an apocalyptic number.

It is an amenable number.

129850993 is a deficient number, since it is larger than the sum of its proper divisors (56015).

129850993 is an equidigital number, since it uses as much as digits as its factorization.

129850993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56014.

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 129850993 is about 11395.2179882616. The cubic root of 129850993 is about 506.3860793970.

The spelling of 129850993 in words is "one hundred twenty-nine million, eight hundred fifty thousand, nine hundred ninety-three".