3855951 has 16 divisors (see below), whose sum is σ = 6232320. Its totient is φ = 2336760.

The previous prime is 3855949. The next prime is 3855953. The reversal of 3855951 is 1595583.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3855949) and next prime (3855953).

It is not a de Polignac number, because 3855951 - 2¹ = 3855949 is a prime.

It is a super-2 number, since 2×3855951² = 29736716228802, which contains 22 as substring.

3855951 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6195 + ... + 6788.

It is an arithmetic number, because the mean of its divisors is an integer number (389520).

Almost surely, 2^3855951 is an apocalyptic number.

3855951 is a deficient number, since it is larger than the sum of its proper divisors (2376369).

3855951 is a wasteful number, since it uses less digits than its factorization.

3855951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13003 (or 12997 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 3855951 is about 1963.6575567038. The cubic root of 3855951 is about 156.8112326874.

It can be divided in two parts, 385 and 5951, that added together give a palindrome (6336).

The spelling of 3855951 in words is "three million, eight hundred fifty-five thousand, nine hundred fifty-one".