822641401 has 4 divisors (see below), whose sum is σ = 822736512. Its totient is φ = 822546292.

The previous prime is 822641377. The next prime is 822641419. The reversal of 822641401 is 104146228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-822641401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 822641401.

It is not an unprimeable number, because it can be changed into a prime (822641431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33121 + ... + 52366.

It is an arithmetic number, because the mean of its divisors is an integer number (205684128).

Almost surely, 2^822641401 is an apocalyptic number.

It is an amenable number.

822641401 is a deficient number, since it is larger than the sum of its proper divisors (95111).

822641401 is an equidigital number, since it uses as much as digits as its factorization.

822641401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95110.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 822641401 is about 28681.7259069255. The cubic root of 822641401 is about 936.9940954263.

Adding to 822641401 its reverse (104146228), we get a palindrome (926787629).

The spelling of 822641401 in words is "eight hundred twenty-two million, six hundred forty-one thousand, four hundred one".