800888953 has 2 divisors, whose sum is σ = 800888954. Its totient is φ = 800888952.

The previous prime is 800888903. The next prime is 800888971. The reversal of 800888953 is 359888008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 666259344 + 134629609 = 25812^2 + 11603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800888953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 800888897 and 800888906.

It is not a weakly prime, because it can be changed into another prime (800888903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400444476 + 400444477.

It is an arithmetic number, because the mean of its divisors is an integer number (400444477).

Almost surely, 2^800888953 is an apocalyptic number.

It is an amenable number.

800888953 is a deficient number, since it is larger than the sum of its proper divisors (1).

800888953 is an equidigital number, since it uses as much as digits as its factorization.

800888953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 49.

The square root of 800888953 is about 28299.9815017607. The cubic root of 800888953 is about 928.6614856347.

The spelling of 800888953 in words is "eight hundred million, eight hundred eighty-eight thousand, nine hundred fifty-three".