801406999 has 2 divisors, whose sum is σ = 801407000. Its totient is φ = 801406998.

The previous prime is 801406973. The next prime is 801407017. The reversal of 801406999 is 999604108.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 801406999 - 2¹⁷ = 801275927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (801406399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400703499 + 400703500.

It is an arithmetic number, because the mean of its divisors is an integer number (400703500).

Almost surely, 2^801406999 is an apocalyptic number.

801406999 is a deficient number, since it is larger than the sum of its proper divisors (1).

801406999 is an equidigital number, since it uses as much as digits as its factorization.

801406999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 801406999 is about 28309.1327843154. The cubic root of 801406999 is about 928.8616738857.

The spelling of 801406999 in words is "eight hundred one million, four hundred six thousand, nine hundred ninety-nine".