3890869 has 4 divisors (see below), whose sum is σ = 3900096. Its totient is φ = 3881644.

The previous prime is 3890863. The next prime is 3890879. The reversal of 3890869 is 9680983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3890869 - 2⁹ = 3890357 is a prime.

It is a super-2 number, since 2×3890869² = 30277723150322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3890863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3949 + ... + 4834.

It is an arithmetic number, because the mean of its divisors is an integer number (975024).

Almost surely, 2^3890869 is an apocalyptic number.

It is an amenable number.

3890869 is a deficient number, since it is larger than the sum of its proper divisors (9227).

3890869 is an equidigital number, since it uses as much as digits as its factorization.

3890869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9226.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 3890869 is about 1972.5285802746. The cubic root of 3890869 is about 157.2831516484.

The spelling of 3890869 in words is "three million, eight hundred ninety thousand, eight hundred sixty-nine".