994011251 has 2 divisors, whose sum is σ = 994011252. Its totient is φ = 994011250.

The previous prime is 994011247. The next prime is 994011281. The reversal of 994011251 is 152110499.

It is a weak prime.

It is an emirp because it is prime and its reverse (152110499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 994011251 - 2² = 994011247 is a prime.

It is a super-2 number, since 2×994011251² = 1976116734229170002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (994011281) 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 as a sum of consecutive naturals, namely, 497005625 + 497005626.

It is an arithmetic number, because the mean of its divisors is an integer number (497005626).

Almost surely, 2^994011251 is an apocalyptic number.

994011251 is a deficient number, since it is larger than the sum of its proper divisors (1).

994011251 is an equidigital number, since it uses as much as digits as its factorization.

994011251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 994011251 is about 31527.9439703892. The cubic root of 994011251 is about 997.9997520090. Note that the first 3 decimals are identical.

The spelling of 994011251 in words is "nine hundred ninety-four million, eleven thousand, two hundred fifty-one".