1401527889 has 12 divisors (see below), whose sum is σ = 2143513476. Its totient is φ = 879389952.

The previous prime is 1401527879. The next prime is 1401527903. The reversal of 1401527889 is 9887251041.

1401527889 is a `hidden beast` number, since 1 + 40 + 1 + 527 + 8 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1181984400 + 219543489 = 34380^2 + 14817^2 .

It is not a de Polignac number, because 1401527889 - 2²⁰ = 1400479313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1401527819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4580004 + ... + 4580309.

It is an arithmetic number, because the mean of its divisors is an integer number (178626123).

Almost surely, 2^1401527889 is an apocalyptic number.

It is an amenable number.

1401527889 is a deficient number, since it is larger than the sum of its proper divisors (741985587).

1401527889 is a wasteful number, since it uses less digits than its factorization.

1401527889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9160336 (or 9160333 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 1401527889 is about 37436.9855757645. The cubic root of 1401527889 is about 1119.0957542518.

The spelling of 1401527889 in words is "one billion, four hundred one million, five hundred twenty-seven thousand, eight hundred eighty-nine".