3861995 has 8 divisors (see below), whose sum is σ = 4747680. Its totient is φ = 3014080.

The previous prime is 3861989. The next prime is 3862003. The reversal of 3861995 is 5991683.

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

It is not a de Polignac number, because 3861995 - 2¹⁸ = 3599851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9215 + ... + 9624.

It is an arithmetic number, because the mean of its divisors is an integer number (593460).

Almost surely, 2^3861995 is an apocalyptic number.

3861995 is a deficient number, since it is larger than the sum of its proper divisors (885685).

3861995 is a wasteful number, since it uses less digits than its factorization.

3861995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18885.

The product of its digits is 58320, while the sum is 41.

The square root of 3861995 is about 1965.1959189862. The cubic root of 3861995 is about 156.8931210317.

The spelling of 3861995 in words is "three million, eight hundred sixty-one thousand, nine hundred ninety-five".