3809997 has 12 divisors (see below), whose sum is σ = 5707520. Its totient is φ = 2539836.

The previous prime is 3809987. The next prime is 3810017. The reversal of 3809997 is 7999083.

It is a happy number.

3809997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3809997 - 2¹⁴ = 3793613 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 8⁷ + 0 + 9² + 9⁵ + 9⁵ + 7³ .

It is a Duffinian number.

3809997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3809917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7597 + ... + 8082.

Almost surely, 2^3809997 is an apocalyptic number.

It is an amenable number.

3809997 is a deficient number, since it is larger than the sum of its proper divisors (1897523).

3809997 is an equidigital number, since it uses as much as digits as its factorization.

3809997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15694 (or 15682 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 3809997 is about 1951.9213611209. The cubic root of 3809997 is about 156.1857993312.

It can be divided in two parts, 3 and 809997, that added together give a 4-th power (810000 = 30⁴).

The spelling of 3809997 in words is "three million, eight hundred nine thousand, nine hundred ninety-seven".