1401000401 has 2 divisors, whose sum is σ = 1401000402. Its totient is φ = 1401000400.

The previous prime is 1401000383. The next prime is 1401000421. The reversal of 1401000401 is 1040001041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 769785025 + 631215376 = 27745^2 + 25124^2 .

It is an emirp because it is prime and its reverse (1040001041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1401000401 - 2¹⁰ = 1400999377 is a prime.

It is not a weakly prime, because it can be changed into another prime (1401000421) 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 as a sum of consecutive naturals, namely, 700500200 + 700500201.

It is an arithmetic number, because the mean of its divisors is an integer number (700500201).

Almost surely, 2^1401000401 is an apocalyptic number.

It is an amenable number.

1401000401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401000401 is an equidigital number, since it uses as much as digits as its factorization.

1401000401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1401000401 is about 37429.9399011006. The cubic root of 1401000401 is about 1118.9553399561.

Adding to 1401000401 its reverse (1040001041), we get a palindrome (2441001442).

The spelling of 1401000401 in words is "one billion, four hundred one million, four hundred one", and thus it is an aban number.