3877989 has 8 divisors (see below), whose sum is σ = 5474880. Its totient is φ = 2433216.

The previous prime is 3877987. The next prime is 3877999. The reversal of 3877989 is 9897783.

It is a happy number.

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

It is not a de Polignac number, because 3877989 - 2¹ = 3877987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 76039 = 3877989 / (3 + 8 + 7 + 7 + 9 + 8 + 9).

3877989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3877987) 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, 37969 + ... + 38070.

It is an arithmetic number, because the mean of its divisors is an integer number (684360).

Almost surely, 2^3877989 is an apocalyptic number.

It is an amenable number.

3877989 is a deficient number, since it is larger than the sum of its proper divisors (1596891).

3877989 is a wasteful number, since it uses less digits than its factorization.

3877989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76059.

The product of its digits is 762048, while the sum is 51.

The square root of 3877989 is about 1969.2610289141. The cubic root of 3877989 is about 157.1094075597.

The spelling of 3877989 in words is "three million, eight hundred seventy-seven thousand, nine hundred eighty-nine".