994821253 has 8 divisors (see below), whose sum is σ = 1026529560. Its totient is φ = 963467520.

The previous prime is 994821241. The next prime is 994821287. The reversal of 994821253 is 352128499.

994821253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8421604 + 986399649 = 2902^2 + 31407^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 994821253 - 2⁹ = 994820741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994821203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82938 + ... + 94171.

It is an arithmetic number, because the mean of its divisors is an integer number (128316195).

Almost surely, 2^994821253 is an apocalyptic number.

It is an amenable number.

994821253 is a deficient number, since it is larger than the sum of its proper divisors (31708307).

994821253 is a wasteful number, since it uses less digits than its factorization.

994821253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177287.

The product of its digits is 155520, while the sum is 43.

The square root of 994821253 is about 31540.7871334880. The cubic root of 994821253 is about 998.2707624612.

The spelling of 994821253 in words is "nine hundred ninety-four million, eight hundred twenty-one thousand, two hundred fifty-three".