847712401 has 2 divisors, whose sum is σ = 847712402. Its totient is φ = 847712400.

The previous prime is 847712399. The next prime is 847712407. The reversal of 847712401 is 104217748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 844193025 + 3519376 = 29055^2 + 1876^2 .

It is a cyclic number.

It is not a de Polignac number, because 847712401 - 2¹ = 847712399 is a prime.

Together with 847712399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (847712407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423856200 + 423856201.

It is an arithmetic number, because the mean of its divisors is an integer number (423856201).

Almost surely, 2^847712401 is an apocalyptic number.

It is an amenable number.

847712401 is a deficient number, since it is larger than the sum of its proper divisors (1).

847712401 is an equidigital number, since it uses as much as digits as its factorization.

847712401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 847712401 is about 29115.5010432587. The cubic root of 847712401 is about 946.4176815908.

The spelling of 847712401 in words is "eight hundred forty-seven million, seven hundred twelve thousand, four hundred one".