140732909 has 2 divisors, whose sum is σ = 140732910. Its totient is φ = 140732908.

The previous prime is 140732827. The next prime is 140732923. The reversal of 140732909 is 909237041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80048809 + 60684100 = 8947^2 + 7790^2 .

It is an emirp because it is prime and its reverse (909237041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140732909 - 2¹² = 140728813 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140732959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70366454 + 70366455.

It is an arithmetic number, because the mean of its divisors is an integer number (70366455).

Almost surely, 2^140732909 is an apocalyptic number.

It is an amenable number.

140732909 is a deficient number, since it is larger than the sum of its proper divisors (1).

140732909 is an equidigital number, since it uses as much as digits as its factorization.

140732909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 140732909 is about 11863.0901960661. The cubic root of 140732909 is about 520.1539349490.

The spelling of 140732909 in words is "one hundred forty million, seven hundred thirty-two thousand, nine hundred nine".