800923957 has 2 divisors, whose sum is σ = 800923958. Its totient is φ = 800923956.

The previous prime is 800923951. The next prime is 800924023. The reversal of 800923957 is 759329008.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 798966756 + 1957201 = 28266^2 + 1399^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800923957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800923951) 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, 400461978 + 400461979.

It is an arithmetic number, because the mean of its divisors is an integer number (400461979).

Almost surely, 2^800923957 is an apocalyptic number.

It is an amenable number.

800923957 is a deficient number, since it is larger than the sum of its proper divisors (1).

800923957 is an equidigital number, since it uses as much as digits as its factorization.

800923957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 800923957 is about 28300.5999406373. The cubic root of 800923957 is about 928.6750149315.

The spelling of 800923957 in words is "eight hundred million, nine hundred twenty-three thousand, nine hundred fifty-seven".