3861975 has 48 divisors (see below), whose sum is σ = 7312032. Its totient is φ = 1781760.

The previous prime is 3861967. The next prime is 3861983. The reversal of 3861975 is 5791683.

3861975 is nontrivially palindromic in base 2.

It is an interprime number because it is at equal distance from previous prime (3861967) and next prime (3861983).

It is not a de Polignac number, because 3861975 - 2³ = 3861967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16459 + ... + 16691.

It is an arithmetic number, because the mean of its divisors is an integer number (152334).

Almost surely, 2^3861975 is an apocalyptic number.

3861975 is a deficient number, since it is larger than the sum of its proper divisors (3450057).

3861975 is a wasteful number, since it uses less digits than its factorization.

3861975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 271 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 3861975 is about 1965.1908304284. The cubic root of 3861975 is about 156.8928501987.

The spelling of 3861975 in words is "three million, eight hundred sixty-one thousand, nine hundred seventy-five".