994809031 has 2 divisors, whose sum is σ = 994809032. Its totient is φ = 994809030.

The previous prime is 994809029. The next prime is 994809103. The reversal of 994809031 is 130908499.

Together with next prime (994809103) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 994809031 - 2¹ = 994809029 is a prime.

It is a super-2 number, since 2×994809031² = 1979290016318317922, which contains 22 as substring.

Together with 994809029, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994809131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497404515 + 497404516.

It is an arithmetic number, because the mean of its divisors is an integer number (497404516).

Almost surely, 2^994809031 is an apocalyptic number.

994809031 is a deficient number, since it is larger than the sum of its proper divisors (1).

994809031 is an equidigital number, since it uses as much as digits as its factorization.

994809031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 994809031 is about 31540.5933837650. The cubic root of 994809031 is about 998.2666743180.

The spelling of 994809031 in words is "nine hundred ninety-four million, eight hundred nine thousand, thirty-one".