401250280439 has 2 divisors, whose sum is σ = 401250280440. Its totient is φ = 401250280438.

The previous prime is 401250280351. The next prime is 401250280451. The reversal of 401250280439 is 934082052104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401250280439 - 2²⁰ = 401249231863 is a prime.

It is a super-2 number, since 2×401250280439² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401250280139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200625140219 + 200625140220.

It is an arithmetic number, because the mean of its divisors is an integer number (200625140220).

Almost surely, 2^401250280439 is an apocalyptic number.

401250280439 is a deficient number, since it is larger than the sum of its proper divisors (1).

401250280439 is an equidigital number, since it uses as much as digits as its factorization.

401250280439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 401250280439 in words is "four hundred one billion, two hundred fifty million, two hundred eighty thousand, four hundred thirty-nine".