140354009 has 2 divisors, whose sum is σ = 140354010. Its totient is φ = 140354008.

The previous prime is 140353951. The next prime is 140354041. The reversal of 140354009 is 900453041.

140354009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107578384 + 32775625 = 10372^2 + 5725^2 .

It is a cyclic number.

It is not a de Polignac number, because 140354009 - 2²⁴ = 123576793 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (140354069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70177004 + 70177005.

It is an arithmetic number, because the mean of its divisors is an integer number (70177005).

Almost surely, 2^140354009 is an apocalyptic number.

It is an amenable number.

140354009 is a deficient number, since it is larger than the sum of its proper divisors (1).

140354009 is an equidigital number, since it uses as much as digits as its factorization.

140354009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 140354009 is about 11847.1097319135. The cubic root of 140354009 is about 519.6867060058.

The spelling of 140354009 in words is "one hundred forty million, three hundred fifty-four thousand, nine".