999023953 has 2 divisors, whose sum is σ = 999023954. Its totient is φ = 999023952.

The previous prime is 999023941. The next prime is 999023981. The reversal of 999023953 is 359320999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 998117649 + 906304 = 31593^2 + 952^2 .

It is an emirp because it is prime and its reverse (359320999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999023953 - 2²⁵ = 965469521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999023897 and 999023906.

It is not a weakly prime, because it can be changed into another prime (999023923) 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, 499511976 + 499511977.

It is an arithmetic number, because the mean of its divisors is an integer number (499511977).

Almost surely, 2^999023953 is an apocalyptic number.

It is an amenable number.

999023953 is a deficient number, since it is larger than the sum of its proper divisors (1).

999023953 is an equidigital number, since it uses as much as digits as its factorization.

999023953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 590490, while the sum is 49.

The square root of 999023953 is about 31607.3401759781. The cubic root of 999023953 is about 999.6745450906.

The spelling of 999023953 in words is "nine hundred ninety-nine million, twenty-three thousand, nine hundred fifty-three".