3809897 has 12 divisors (see below), whose sum is σ = 4773636. Its totient is φ = 3013920.

The previous prime is 3809891. The next prime is 3809903. The reversal of 3809897 is 7989083.

It is an interprime number because it is at equal distance from previous prime (3809891) and next prime (3809903).

It can be written as a sum of positive squares in 2 ways, for example, as 290521 + 3519376 = 539^2 + 1876^2 .

It is not a de Polignac number, because 3809897 - 2¹⁶ = 3744361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3809891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2354 + ... + 3627.

It is an arithmetic number, because the mean of its divisors is an integer number (397803).

Almost surely, 2^3809897 is an apocalyptic number.

It is an amenable number.

3809897 is a deficient number, since it is larger than the sum of its proper divisors (963739).

3809897 is a wasteful number, since it uses less digits than its factorization.

3809897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6008 (or 6001 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 3809897 is about 1951.8957451667. The cubic root of 3809897 is about 156.1844328633.

The spelling of 3809897 in words is "three million, eight hundred nine thousand, eight hundred ninety-seven".