3880909 has 4 divisors (see below), whose sum is σ = 3903516. Its totient is φ = 3858304.

The previous prime is 3880907. The next prime is 3880927. The reversal of 3880909 is 9090883.

3880909 = T₁₆₀₇ + T₁₆₀₈ + T₁₆₀₉.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9090883 = 103 ⋅88261.

It can be written as a sum of positive squares in 2 ways, for example, as 3526884 + 354025 = 1878^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 3880909 - 2¹ = 3880907 is a prime.

It is a super-2 number, since 2×3880909² = 30122909332562, which contains 22 as substring.

It is a Duffinian number.

3880909 is a modest number, since divided by 909 gives 388 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3880901) 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, 11044 + ... + 11389.

It is an arithmetic number, because the mean of its divisors is an integer number (975879).

Almost surely, 2^3880909 is an apocalyptic number.

3880909 is the 1609-th centered triangular number.

It is an amenable number.

3880909 is a deficient number, since it is larger than the sum of its proper divisors (22607).

3880909 is a wasteful number, since it uses less digits than its factorization.

3880909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22606.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 3880909 is about 1970.0022842626. The cubic root of 3880909 is about 157.1488304302.

The spelling of 3880909 in words is "three million, eight hundred eighty thousand, nine hundred nine".