3865898 has 4 divisors (see below), whose sum is σ = 5798850. Its totient is φ = 1932948.

The previous prime is 3865889. The next prime is 3865907. The reversal of 3865898 is 8985683.

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

It is an interprime number because it is at equal distance from previous prime (3865889) and next prime (3865907).

It can be written as a sum of positive squares in only one way, i.e., 3598609 + 267289 = 1897^2 + 517^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 966473 + ... + 966476.

Almost surely, 2^3865898 is an apocalyptic number.

3865898 is a deficient number, since it is larger than the sum of its proper divisors (1932952).

3865898 is a wasteful number, since it uses less digits than its factorization.

3865898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932951.

The product of its digits is 414720, while the sum is 47.

The square root of 3865898 is about 1966.1886989808. The cubic root of 3865898 is about 156.9459562186.

The spelling of 3865898 in words is "three million, eight hundred sixty-five thousand, eight hundred ninety-eight".