129850895 has 16 divisors (see below), whose sum is σ = 163029888. Its totient is φ = 99183360.

The previous prime is 129850849. The next prime is 129850949. The reversal of 129850895 is 598058921.

It is not a de Polignac number, because 129850895 - 2¹⁴ = 129834511 is a prime.

It is a super-2 number, since 2×129850895² = 33722509864602050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2897 + ... + 16373.

It is an arithmetic number, because the mean of its divisors is an integer number (10189368).

Almost surely, 2^129850895 is an apocalyptic number.

129850895 is a deficient number, since it is larger than the sum of its proper divisors (33178993).

129850895 is a wasteful number, since it uses less digits than its factorization.

129850895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13570.

The product of its (nonzero) digits is 259200, while the sum is 47.

The square root of 129850895 is about 11395.2136882114. The cubic root of 129850895 is about 506.3859520052.

The spelling of 129850895 in words is "one hundred twenty-nine million, eight hundred fifty thousand, eight hundred ninety-five".