3994531001 has 4 divisors (see below), whose sum is σ = 3995195472. Its totient is φ = 3993866532.

The previous prime is 3994530997. The next prime is 3994531033. The reversal of 3994531001 is 1001354993.

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 a cyclic number.

It is not a de Polignac number, because 3994531001 - 2² = 3994530997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3994531201) 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, 323135 + ... + 335268.

It is an arithmetic number, because the mean of its divisors is an integer number (998798868).

Almost surely, 2^3994531001 is an apocalyptic number.

It is an amenable number.

3994531001 is a deficient number, since it is larger than the sum of its proper divisors (664471).

3994531001 is an equidigital number, since it uses as much as digits as its factorization.

3994531001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664470.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 3994531001 is about 63202.3021811706. The cubic root of 3994531001 is about 1586.6772641045.

Adding to 3994531001 its reverse (1001354993), we get a palindrome (4995885994).

The spelling of 3994531001 in words is "three billion, nine hundred ninety-four million, five hundred thirty-one thousand, one".