994643451 has 12 divisors (see below), whose sum is σ = 1437249528. Its totient is φ = 662845344.

The previous prime is 994643437. The next prime is 994643453. The reversal of 994643451 is 154346499.

It is not a de Polignac number, because 994643451 - 2¹⁹ = 994119163 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 994643397 and 994643406.

It is not an unprimeable number, because it can be changed into a prime (994643453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6151 + ... + 45023.

It is an arithmetic number, because the mean of its divisors is an integer number (119770794).

Almost surely, 2^994643451 is an apocalyptic number.

994643451 is a deficient number, since it is larger than the sum of its proper divisors (442606077).

994643451 is a wasteful number, since it uses less digits than its factorization.

994643451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41722 (or 41719 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 994643451 is about 31537.9684031803. The cubic root of 994643451 is about 998.2112860768.

The spelling of 994643451 in words is "nine hundred ninety-four million, six hundred forty-three thousand, four hundred fifty-one".