3858987 has 16 divisors (see below), whose sum is σ = 5645952. Its totient is φ = 2325120.

The previous prime is 3858971. The next prime is 3858991. The reversal of 3858987 is 7898583.

It is a happy number.

It is not a de Polignac number, because 3858987 - 2⁴ = 3858971 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (3858947) 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, 10948 + ... + 11294.

It is an arithmetic number, because the mean of its divisors is an integer number (352872).

Almost surely, 2^3858987 is an apocalyptic number.

3858987 is a deficient number, since it is larger than the sum of its proper divisors (1786965).

3858987 is a wasteful number, since it uses less digits than its factorization.

3858987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698.

The product of its digits is 483840, while the sum is 48.

The square root of 3858987 is about 1964.4304518104. The cubic root of 3858987 is about 156.8523772291.

The spelling of 3858987 in words is "three million, eight hundred fifty-eight thousand, nine hundred eighty-seven".