401490560729 has 2 divisors, whose sum is σ = 401490560730. Its totient is φ = 401490560728.

The previous prime is 401490560707. The next prime is 401490560749. The reversal of 401490560729 is 927065094104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236351545600 + 165139015129 = 486160^2 + 406373^2 .

It is a cyclic number.

It is not a de Polignac number, because 401490560729 - 2²⁰ = 401489512153 is a prime.

It is a super-2 number, since 2×401490560729² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401490560749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200745280364 + 200745280365.

It is an arithmetic number, because the mean of its divisors is an integer number (200745280365).

Almost surely, 2^401490560729 is an apocalyptic number.

It is an amenable number.

401490560729 is a deficient number, since it is larger than the sum of its proper divisors (1).

401490560729 is an equidigital number, since it uses as much as digits as its factorization.

401490560729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 401490560729 in words is "four hundred one billion, four hundred ninety million, five hundred sixty thousand, seven hundred twenty-nine".