3869775 has 108 divisors (see below), whose sum is σ = 9004632. Its totient is φ = 1632960.

The previous prime is 3869759. The next prime is 3869791. The reversal of 3869775 is 5779683.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3869759) and next prime (3869791).

It is not a de Polignac number, because 3869775 - 2⁴ = 3869759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an Ulam number.

It is a d-powerful number, because it can be written as 3³ + 8⁷ + 6⁶ + 9³ + 7⁷ + 7⁷ + 5⁷ .

Its product of digits (317520) is a multiple of the sum of its prime divisors (28).

It is a self number, because there is not a number n which added to its sum of digits gives 3869775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 297669 + ... + 297681.

Almost surely, 2^3869775 is an apocalyptic number.

3869775 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3869775 is an abundant number, since it is smaller than the sum of its proper divisors (5134857).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3869775 is a wasteful number, since it uses less digits than its factorization.

3869775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52 (or 28 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 3869775 is about 1967.1743694955. The cubic root of 3869775 is about 156.9984042463.

The spelling of 3869775 in words is "three million, eight hundred sixty-nine thousand, seven hundred seventy-five".