800121593 has 2 divisors, whose sum is σ = 800121594. Its totient is φ = 800121592.

The previous prime is 800121589. The next prime is 800121599. The reversal of 800121593 is 395121008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 799023289 + 1098304 = 28267^2 + 1048^2 .

It is a cyclic number.

It is not a de Polignac number, because 800121593 - 2² = 800121589 is a prime.

It is not a weakly prime, because it can be changed into another prime (800121599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400060796 + 400060797.

It is an arithmetic number, because the mean of its divisors is an integer number (400060797).

Almost surely, 2^800121593 is an apocalyptic number.

It is an amenable number.

800121593 is a deficient number, since it is larger than the sum of its proper divisors (1).

800121593 is an equidigital number, since it uses as much as digits as its factorization.

800121593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 800121593 is about 28286.4206466637. The cubic root of 800121593 is about 928.3647963992.

The spelling of 800121593 in words is "eight hundred million, one hundred twenty-one thousand, five hundred ninety-three".