140320989 has 6 divisors (see below), whose sum is σ = 202685886. Its totient is φ = 93547320.

The previous prime is 140320987. The next prime is 140321021. The reversal of 140320989 is 989023041.

It can be written as a sum of positive squares in only one way, i.e., 100100025 + 40220964 = 10005^2 + 6342^2 .

It is not a de Polignac number, because 140320989 - 2¹ = 140320987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140320987) 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 5 ways as a sum of consecutive naturals, for example, 7795602 + ... + 7795619.

It is an arithmetic number, because the mean of its divisors is an integer number (33780981).

Almost surely, 2^140320989 is an apocalyptic number.

It is an amenable number.

140320989 is a deficient number, since it is larger than the sum of its proper divisors (62364897).

140320989 is a wasteful number, since it uses less digits than its factorization.

140320989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15591227 (or 15591224 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 140320989 is about 11845.7160610915. The cubic root of 140320989 is about 519.6459485881.

The spelling of 140320989 in words is "one hundred forty million, three hundred twenty thousand, nine hundred eighty-nine".