2000003961 has 4 divisors (see below), whose sum is σ = 2666671952. Its totient is φ = 1333335972.

The previous prime is 2000003891. The next prime is 2000003963. The reversal of 2000003961 is 1693000002.

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 2000003961 - 2⁹ = 2000003449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2000003963) 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, 333333991 + ... + 333333996.

It is an arithmetic number, because the mean of its divisors is an integer number (666667988).

Almost surely, 2^2000003961 is an apocalyptic number.

It is an amenable number.

2000003961 is a deficient number, since it is larger than the sum of its proper divisors (666667991).

2000003961 is an equidigital number, since it uses as much as digits as its factorization.

2000003961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666667990.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 2000003961 is about 44721.4038353002. The cubic root of 2000003961 is about 1259.9218816522.

Adding to 2000003961 its reverse (1693000002), we get a palindrome (3693003963).

The spelling of 2000003961 in words is "two billion, three thousand, nine hundred sixty-one".