401311489 has 2 divisors, whose sum is σ = 401311490. Its totient is φ = 401311488.

The previous prime is 401311447. The next prime is 401311499. The reversal of 401311489 is 984113104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299463025 + 101848464 = 17305^2 + 10092^2 .

It is a cyclic number.

It is not a de Polignac number, because 401311489 - 2¹⁹ = 400787201 is a prime.

It is a super-2 number, since 2×401311489² = 322101822406794242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401311489.

It is not a weakly prime, because it can be changed into another prime (401311409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200655744 + 200655745.

It is an arithmetic number, because the mean of its divisors is an integer number (200655745).

Almost surely, 2^401311489 is an apocalyptic number.

It is an amenable number.

401311489 is a deficient number, since it is larger than the sum of its proper divisors (1).

401311489 is an equidigital number, since it uses as much as digits as its factorization.

401311489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 401311489 is about 20032.7603939148. The cubic root of 401311489 is about 737.6106823827.

The spelling of 401311489 in words is "four hundred one million, three hundred eleven thousand, four hundred eighty-nine".