994424691 has 32 divisors (see below), whose sum is σ = 1474278400. Its totient is φ = 592251264.

The previous prime is 994424687. The next prime is 994424699. The reversal of 994424691 is 196424499.

It is not a de Polignac number, because 994424691 - 2² = 994424687 is a prime.

It is the 31535-th Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 994424691.

It is not an unprimeable number, because it can be changed into a prime (994424699) by changing a digit.

It is a nontrivial repunit in base 31534.

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 31 ways as a sum of consecutive naturals, for example, 285426 + ... + 288888.

It is an arithmetic number, because the mean of its divisors is an integer number (46071200).

Almost surely, 2^994424691 is an apocalyptic number.

994424691 is a deficient number, since it is larger than the sum of its proper divisors (479853709).

994424691 is a wasteful number, since it uses less digits than its factorization.

994424691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3715.

The product of its digits is 559872, while the sum is 48.

The square root of 994424691 is about 31534.5000118917. The cubic root of 994424691 is about 998.1380991434.

The spelling of 994424691 in words is "nine hundred ninety-four million, four hundred twenty-four thousand, six hundred ninety-one".