3980015885 has 4 divisors (see below), whose sum is σ = 4776019068. Its totient is φ = 3184012704.

The previous prime is 3980015873. The next prime is 3980015891. The reversal of 3980015885 is 5885100893.

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 2817274084 + 1162741801 = 53078^2 + 34099^2 .

It is a cyclic number.

It is not a de Polignac number, because 3980015885 - 2³⁰ = 2906274061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 398001584 + ... + 398001593.

It is an arithmetic number, because the mean of its divisors is an integer number (1194004767).

Almost surely, 2^3980015885 is an apocalyptic number.

It is an amenable number.

3980015885 is a deficient number, since it is larger than the sum of its proper divisors (796003183).

3980015885 is an equidigital number, since it uses as much as digits as its factorization.

3980015885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796003182.

The product of its (nonzero) digits is 345600, while the sum is 47.

The square root of 3980015885 is about 63087.3670793131. The cubic root of 3980015885 is about 1584.7530701645.

The spelling of 3980015885 in words is "three billion, nine hundred eighty million, fifteen thousand, eight hundred eighty-five".