140460509 has 12 divisors (see below), whose sum is σ = 163835100. Its totient is φ = 120068928.

The previous prime is 140460503. The next prime is 140460569. The reversal of 140460509 is 905064041.

It can be written as a sum of positive squares in 2 ways, for example, as 86025625 + 54434884 = 9275^2 + 7378^2 .

It is not a de Polignac number, because 140460509 - 2¹⁶ = 140394973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140460503) 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, 15377 + ... + 22745.

It is an arithmetic number, because the mean of its divisors is an integer number (13652925).

Almost surely, 2^140460509 is an apocalyptic number.

It is an amenable number.

140460509 is a deficient number, since it is larger than the sum of its proper divisors (23374591).

140460509 is an equidigital number, since it uses as much as digits as its factorization.

140460509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7772 (or 7765 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 140460509 is about 11851.6036467644. The cubic root of 140460509 is about 519.8181180962.

The spelling of 140460509 in words is "one hundred forty million, four hundred sixty thousand, five hundred nine".