845347001 has 2 divisors, whose sum is σ = 845347002. Its totient is φ = 845347000.

The previous prime is 845346989. The next prime is 845347003. The reversal of 845347001 is 100743548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 531348601 + 313998400 = 23051^2 + 17720^2 .

It is a cyclic number.

It is not a de Polignac number, because 845347001 - 2⁶ = 845346937 is a prime.

It is a super-2 number, since 2×845347001² = 1429223104199388002, which contains 22 as substring.

Together with 845347003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (845347003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422673500 + 422673501.

It is an arithmetic number, because the mean of its divisors is an integer number (422673501).

Almost surely, 2^845347001 is an apocalyptic number.

It is an amenable number.

845347001 is a deficient number, since it is larger than the sum of its proper divisors (1).

845347001 is an equidigital number, since it uses as much as digits as its factorization.

845347001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 845347001 is about 29074.8516935169. The cubic root of 845347001 is about 945.5365880288.

The spelling of 845347001 in words is "eight hundred forty-five million, three hundred forty-seven thousand, one".