3855129 has 8 divisors (see below), whose sum is σ = 5306112. Its totient is φ = 2487120.

The previous prime is 3855127. The next prime is 3855133. The reversal of 3855129 is 9215583.

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

It is not a de Polignac number, because 3855129 - 2¹ = 3855127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3855129.

It is not an unprimeable number, because it can be changed into a prime (3855127) 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, 20634 + ... + 20819.

It is an arithmetic number, because the mean of its divisors is an integer number (663264).

Almost surely, 2^3855129 is an apocalyptic number.

It is an amenable number.

3855129 is a deficient number, since it is larger than the sum of its proper divisors (1450983).

3855129 is a wasteful number, since it uses less digits than its factorization.

3855129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41487.

The product of its digits is 10800, while the sum is 33.

The square root of 3855129 is about 1963.4482422514. The cubic root of 3855129 is about 156.8000890470.

It can be divided in two parts, 38 and 55129, that multiplied together give a palindrome (2094902).

The spelling of 3855129 in words is "three million, eight hundred fifty-five thousand, one hundred twenty-nine".