3990812011 has 6 divisors (see below), whose sum is σ = 4010648012. Its totient is φ = 3970984920.

The previous prime is 3990811997. The next prime is 3990812027. The reversal of 3990812011 is 1102180993.

It is not a de Polignac number, because 3990812011 - 2⁷ = 3990811883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3990812071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 915465 + ... + 919813.

Almost surely, 2^3990812011 is an apocalyptic number.

3990812011 is a deficient number, since it is larger than the sum of its proper divisors (19836001).

3990812011 is an frugal number, since it uses more digits than its factorization.

3990812011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8909 (or 4560 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 3990812011 is about 63172.8740125063. The cubic root of 3990812011 is about 1586.1847015574.

The spelling of 3990812011 in words is "three billion, nine hundred ninety million, eight hundred twelve thousand, eleven".