822400379 has 2 divisors, whose sum is σ = 822400380. Its totient is φ = 822400378.

The previous prime is 822400321. The next prime is 822400387. The reversal of 822400379 is 973004228.

822400379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-822400379 is a prime.

It is a super-3 number, since 3×822400379³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (822400979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411200189 + 411200190.

It is an arithmetic number, because the mean of its divisors is an integer number (411200190).

Almost surely, 2^822400379 is an apocalyptic number.

822400379 is a deficient number, since it is larger than the sum of its proper divisors (1).

822400379 is an equidigital number, since it uses as much as digits as its factorization.

822400379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 822400379 is about 28677.5239342590. The cubic root of 822400379 is about 936.9025779276.

The spelling of 822400379 in words is "eight hundred twenty-two million, four hundred thousand, three hundred seventy-nine".