1401144401 has 12 divisors (see below), whose sum is σ = 1453110768. Its totient is φ = 1350722472.

The previous prime is 1401144389. The next prime is 1401144413. The reversal of 1401144401 is 1044411041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1401144389) and next prime (1401144413).

It is a de Polignac number, because none of the positive numbers 2^k-1401144401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401144421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143270 + ... + 152736.

It is an arithmetic number, because the mean of its divisors is an integer number (121092564).

Almost surely, 2^1401144401 is an apocalyptic number.

It is an amenable number.

1401144401 is a deficient number, since it is larger than the sum of its proper divisors (51966367).

1401144401 is an frugal number, since it uses more digits than its factorization.

1401144401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9628 (or 9581 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1401144401 is about 37431.8634454658. The cubic root of 1401144401 is about 1118.9936754314.

Adding to 1401144401 its reverse (1044411041), we get a palindrome (2445555442).

The spelling of 1401144401 in words is "one billion, four hundred one million, one hundred forty-four thousand, four hundred one".