1401031409 has 2 divisors, whose sum is σ = 1401031410. Its totient is φ = 1401031408.

The previous prime is 1401031399. The next prime is 1401031417. The reversal of 1401031409 is 9041301041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1399882225 + 1149184 = 37415^2 + 1072^2 .

It is an emirp because it is prime and its reverse (9041301041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1401031409 - 2⁴ = 1401031393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1401030409) 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, 700515704 + 700515705.

It is an arithmetic number, because the mean of its divisors is an integer number (700515705).

Almost surely, 2^1401031409 is an apocalyptic number.

It is an amenable number.

1401031409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401031409 is an equidigital number, since it uses as much as digits as its factorization.

1401031409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1401031409 is about 37430.3541126717. The cubic root of 1401031409 is about 1118.9635950837.

The spelling of 1401031409 in words is "one billion, four hundred one million, thirty-one thousand, four hundred nine".