3726309 has 4 divisors (see below), whose sum is σ = 4968416. Its totient is φ = 2484204.

The previous prime is 3726277. The next prime is 3726311. The reversal of 3726309 is 9036273.

It is a happy number.

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.

It is not a de Polignac number, because 3726309 - 2⁵ = 3726277 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

3726309 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3726319) 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, 621049 + ... + 621054.

It is an arithmetic number, because the mean of its divisors is an integer number (1242104).

Almost surely, 2^3726309 is an apocalyptic number.

It is an amenable number.

3726309 is a deficient number, since it is larger than the sum of its proper divisors (1242107).

3726309 is a wasteful number, since it uses less digits than its factorization.

3726309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242106.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 3726309 is about 1930.3649913941. The cubic root of 3726309 is about 155.0337630231.

The spelling of 3726309 in words is "three million, seven hundred twenty-six thousand, three hundred nine".