3946634409 has 4 divisors (see below), whose sum is σ = 5262179216. Its totient is φ = 2631089604.

The previous prime is 3946634401. The next prime is 3946634411. The reversal of 3946634409 is 9044366493.

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 3946634409 - 2³ = 3946634401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3946634401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657772399 + ... + 657772404.

It is an arithmetic number, because the mean of its divisors is an integer number (1315544804).

Almost surely, 2^3946634409 is an apocalyptic number.

It is an amenable number.

3946634409 is a deficient number, since it is larger than the sum of its proper divisors (1315544807).

3946634409 is a wasteful number, since it uses less digits than its factorization.

3946634409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315544806.

The product of its (nonzero) digits is 1679616, while the sum is 48.

The square root of 3946634409 is about 62822.2445396533. The cubic root of 3946634409 is about 1580.3100402363.

The spelling of 3946634409 in words is "three billion, nine hundred forty-six million, six hundred thirty-four thousand, four hundred nine".