385860129 has 4 divisors (see below), whose sum is σ = 514480176. Its totient is φ = 257240084.

The previous prime is 385860119. The next prime is 385860149. The reversal of 385860129 is 921068583.

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, and also an emirpimes, since its reverse is a distinct semiprime: 921068583 = 3 ⋅307022861.

It is a cyclic number.

It is not a de Polignac number, because 385860129 - 2⁷ = 385860001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (385860119) 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, 64310019 + ... + 64310024.

It is an arithmetic number, because the mean of its divisors is an integer number (128620044).

Almost surely, 2^385860129 is an apocalyptic number.

It is an amenable number.

385860129 is a deficient number, since it is larger than the sum of its proper divisors (128620047).

385860129 is a wasteful number, since it uses less digits than its factorization.

385860129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128620046.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 385860129 is about 19643.3227586373. The cubic root of 385860129 is about 728.0199855893.

The spelling of 385860129 in words is "three hundred eighty-five million, eight hundred sixty thousand, one hundred twenty-nine".