401444440431 has 16 divisors (see below), whose sum is σ = 565497676800. Its totient is φ = 252903122528.

The previous prime is 401444440391. The next prime is 401444440483. The reversal of 401444440431 is 134044444104.

It is a cyclic number.

It is not a de Polignac number, because 401444440431 - 2¹⁴ = 401444424047 is a prime.

It is a super-2 number, since 2×401444440431² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401444440392 and 401444440401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401444440031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49084251 + ... + 49092428.

It is an arithmetic number, because the mean of its divisors is an integer number (35343604800).

Almost surely, 2^401444440431 is an apocalyptic number.

401444440431 is a deficient number, since it is larger than the sum of its proper divisors (164053236369).

401444440431 is a wasteful number, since it uses less digits than its factorization.

401444440431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98176758.

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 401444440431 its reverse (134044444104), we get a palindrome (535488884535).

The spelling of 401444440431 in words is "four hundred one billion, four hundred forty-four million, four hundred forty thousand, four hundred thirty-one".