129850897 has 8 divisors (see below), whose sum is σ = 142114752. Its totient is φ = 117663600.

The previous prime is 129850849. The next prime is 129850949. The reversal of 129850897 is 798058921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129850897 is a prime.

It is a super-2 number, since 2×129850897² = 33722510903409218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129850897.

It is not an unprimeable number, because it can be changed into a prime (129850817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15558 + ... + 22399.

It is an arithmetic number, because the mean of its divisors is an integer number (17764344).

Almost surely, 2^129850897 is an apocalyptic number.

It is an amenable number.

129850897 is a deficient number, since it is larger than the sum of its proper divisors (12263855).

129850897 is a wasteful number, since it uses less digits than its factorization.

129850897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38279.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 129850897 is about 11395.2137759675. The cubic root of 129850897 is about 506.3859546050.

The spelling of 129850897 in words is "one hundred twenty-nine million, eight hundred fifty thousand, eight hundred ninety-seven".