1401185936089 has 9 divisors (see below), whose sum is σ = 1425408420853. Its totient is φ = 1377368366332.

The previous prime is 1401185936071. The next prime is 1401185936099. The reversal of 1401185936089 is 9806395811041.

It is a happy number.

The square root of 1401185936089 is 1183717.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1401185936089 - 2²⁷ = 1401051718361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401185936099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 69829272 + ... + 69849334.

Almost surely, 2^{1401185936089} is an apocalyptic number.

1401185936089 is the 1183717-th square number.

1401185936089 is the 591859-th centered octagonal number.

It is an amenable number.

1401185936089 is a deficient number, since it is larger than the sum of its proper divisors (24222484764).

1401185936089 is an frugal number, since it uses more digits than its factorization.

1401185936089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40244 (or 20122 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 55.

The spelling of 1401185936089 in words is "one trillion, four hundred one billion, one hundred eighty-five million, nine hundred thirty-six thousand, eighty-nine".