3806590649 has 4 divisors (see below), whose sum is σ = 4030507764. Its totient is φ = 3582673536.

The previous prime is 3806590637. The next prime is 3806590651. The reversal of 3806590649 is 9460956083.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2333566249 + 1473024400 = 48307^2 + 38380^2 .

It is a cyclic number.

It is not a de Polignac number, because 3806590649 - 2⁴ = 3806590633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3806590597 and 3806590606.

It is not an unprimeable number, because it can be changed into a prime (3806590699) 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, 111958532 + ... + 111958565.

It is an arithmetic number, because the mean of its divisors is an integer number (1007626941).

Almost surely, 2^3806590649 is an apocalyptic number.

It is an amenable number.

3806590649 is a deficient number, since it is larger than the sum of its proper divisors (223917115).

3806590649 is a wasteful number, since it uses less digits than its factorization.

3806590649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223917114.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The square root of 3806590649 is about 61697.5740933142. The cubic root of 3806590649 is about 1561.3923916460.

The spelling of 3806590649 in words is "three billion, eight hundred six million, five hundred ninety thousand, six hundred forty-nine".