401222387 has 2 divisors, whose sum is σ = 401222388. Its totient is φ = 401222386.

The previous prime is 401222369. The next prime is 401222441. The reversal of 401222387 is 783222104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401222387 - 2¹⁰ = 401221363 is a prime.

It is not a weakly prime, because it can be changed into another prime (401222347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200611193 + 200611194.

It is an arithmetic number, because the mean of its divisors is an integer number (200611194).

Almost surely, 2^401222387 is an apocalyptic number.

401222387 is a deficient number, since it is larger than the sum of its proper divisors (1).

401222387 is an equidigital number, since it uses as much as digits as its factorization.

401222387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 401222387 is about 20030.5363632630. The cubic root of 401222387 is about 737.5560885045.

The spelling of 401222387 in words is "four hundred one million, two hundred twenty-two thousand, three hundred eighty-seven".