994001001 has 16 divisors (see below), whose sum is σ = 1530286464. Its totient is φ = 562143744.

The previous prime is 994000991. The next prime is 994001009. The reversal of 994001001 is 100100499.

It is not a de Polignac number, because 994001001 - 2⁶ = 994000937 is a prime.

994001001 is a modest number, since divided by 1001 gives 994 as remainder.

It is not an unprimeable number, because it can be changed into a prime (994001009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241950 + ... + 246023.

It is an arithmetic number, because the mean of its divisors is an integer number (95642904).

Almost surely, 2^994001001 is an apocalyptic number.

It is an amenable number.

994001001 is a deficient number, since it is larger than the sum of its proper divisors (536285463).

994001001 is a wasteful number, since it uses less digits than its factorization.

994001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488080.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 994001001 is about 31527.7814157609. The cubic root of 994001001 is about 997.9963216210.

The spelling of 994001001 in words is "nine hundred ninety-four million, one thousand, one".