401222369 has 2 divisors, whose sum is σ = 401222370. Its totient is φ = 401222368.

The previous prime is 401222363. The next prime is 401222387. The reversal of 401222369 is 963222104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278455969 + 122766400 = 16687^2 + 11080^2 .

It is a cyclic number.

It is not a de Polignac number, because 401222369 - 2⁸ = 401222113 is a prime.

It is a super-2 number, since 2×401222369² = 321958778771944322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (401222363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200611184 + 200611185.

It is an arithmetic number, because the mean of its divisors is an integer number (200611185).

Almost surely, 2^401222369 is an apocalyptic number.

It is an amenable number.

401222369 is a deficient number, since it is larger than the sum of its proper divisors (1).

401222369 is an equidigital number, since it uses as much as digits as its factorization.

401222369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 401222369 is about 20030.5359139490. The cubic root of 401222369 is about 737.5560774749.

The spelling of 401222369 in words is "four hundred one million, two hundred twenty-two thousand, three hundred sixty-nine".