3906321009 has 16 divisors (see below), whose sum is σ = 5234835840. Its totient is φ = 2591043840.

The previous prime is 3906321007. The next prime is 3906321019. The reversal of 3906321009 is 9001236093.

It is not a de Polignac number, because 3906321009 - 2¹ = 3906321007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3906321007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510804 + ... + 518394.

It is an arithmetic number, because the mean of its divisors is an integer number (327177240).

Almost surely, 2^3906321009 is an apocalyptic number.

It is an amenable number.

3906321009 is a deficient number, since it is larger than the sum of its proper divisors (1328514831).

3906321009 is a wasteful number, since it uses less digits than its factorization.

3906321009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 3906321009 is about 62500.5680694184. The cubic root of 3906321009 is about 1574.9108553224.

The spelling of 3906321009 in words is "three billion, nine hundred six million, three hundred twenty-one thousand, nine".