3809613 has 4 divisors (see below), whose sum is σ = 5079488. Its totient is φ = 2539740.

The previous prime is 3809599. The next prime is 3809623. The reversal of 3809613 is 3169083.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3169083 = 3 ⋅1056361.

It is not a de Polignac number, because 3809613 - 2⁶ = 3809549 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3809623) 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, 634933 + ... + 634938.

It is an arithmetic number, because the mean of its divisors is an integer number (1269872).

Almost surely, 2^3809613 is an apocalyptic number.

It is an amenable number.

3809613 is a deficient number, since it is larger than the sum of its proper divisors (1269875).

3809613 is a wasteful number, since it uses less digits than its factorization.

3809613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269874.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 3809613 is about 1951.8229940238. The cubic root of 3809613 is about 156.1805519638.

The spelling of 3809613 in words is "three million, eight hundred nine thousand, six hundred thirteen".