3899745506 has 8 divisors (see below), whose sum is σ = 5852904384. Its totient is φ = 1948777380.

The previous prime is 3899745491. The next prime is 3899745527. The reversal of 3899745506 is 6055479983.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543230 + ... + 550361.

It is an arithmetic number, because the mean of its divisors is an integer number (731613048).

Almost surely, 2^3899745506 is an apocalyptic number.

3899745506 is a deficient number, since it is larger than the sum of its proper divisors (1953158878).

3899745506 is a wasteful number, since it uses less digits than its factorization.

3899745506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095376.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The square root of 3899745506 is about 62447.9423680236. The cubic root of 3899745506 is about 1574.0266775056.

The spelling of 3899745506 in words is "three billion, eight hundred ninety-nine million, seven hundred forty-five thousand, five hundred six".