3869919 has 6 divisors (see below), whose sum is σ = 5589896. Its totient is φ = 2579940.

The previous prime is 3869917. The next prime is 3869959. The reversal of 3869919 is 9199683.

It is not a de Polignac number, because 3869919 - 2¹ = 3869917 is a prime.

It is a super-2 number, since 2×3869919² = 29952546133122, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3¹³ + 8⁷ + 6⁴ + 9⁵ + 9⁵ + 1 + 9⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3869917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214987 + ... + 215004.

Almost surely, 2^3869919 is an apocalyptic number.

3869919 is a deficient number, since it is larger than the sum of its proper divisors (1719977).

3869919 is a wasteful number, since it uses less digits than its factorization.

3869919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429997 (or 429994 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 3869919 is about 1967.2109698759. The cubic root of 3869919 is about 157.0003516024. Note that the first 3 decimals are identical.

The spelling of 3869919 in words is "three million, eight hundred sixty-nine thousand, nine hundred nineteen".