3869887 has 4 divisors (see below), whose sum is σ = 4422736. Its totient is φ = 3317040.

The previous prime is 3869881. The next prime is 3869917. The reversal of 3869887 is 7889683.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3869887 - 2⁷ = 3869759 is a prime.

It is a Duffinian number.

3869887 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3869887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3869881) 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, 276414 + ... + 276427.

It is an arithmetic number, because the mean of its divisors is an integer number (1105684).

Almost surely, 2^3869887 is an apocalyptic number.

3869887 is a deficient number, since it is larger than the sum of its proper divisors (552849).

3869887 is an equidigital number, since it uses as much as digits as its factorization.

3869887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552848.

The product of its digits is 580608, while the sum is 49.

The square root of 3869887 is about 1967.2028365169. The cubic root of 3869887 is about 156.9999188608. Note that the first 4 decimals are identical.

The spelling of 3869887 in words is "three million, eight hundred sixty-nine thousand, eight hundred eighty-seven".