3974638809 has 8 divisors (see below), whose sum is σ = 5529932352. Its totient is φ = 2534552240.

The previous prime is 3974638783. The next prime is 3974638813. The reversal of 3974638809 is 9088364793.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3974638809 - 2⁸ = 3974638553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3974638849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28801662 + ... + 28801799.

It is an arithmetic number, because the mean of its divisors is an integer number (691241544).

Almost surely, 2^3974638809 is an apocalyptic number.

It is an amenable number.

3974638809 is a deficient number, since it is larger than the sum of its proper divisors (1555293543).

3974638809 is a wasteful number, since it uses less digits than its factorization.

3974638809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57603487.

The product of its (nonzero) digits is 7838208, while the sum is 57.

The square root of 3974638809 is about 63044.7365685669. The cubic root of 3974638809 is about 1584.0390715001.

The spelling of 3974638809 in words is "three billion, nine hundred seventy-four million, six hundred thirty-eight thousand, eight hundred nine".