140101609 has 2 divisors, whose sum is σ = 140101610. Its totient is φ = 140101608.

The previous prime is 140101603. The next prime is 140101651. The reversal of 140101609 is 906101041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92698384 + 47403225 = 9628^2 + 6885^2 .

It is a cyclic number.

It is not a de Polignac number, because 140101609 - 2³ = 140101601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140101609.

It is not a weakly prime, because it can be changed into another prime (140101601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70050804 + 70050805.

It is an arithmetic number, because the mean of its divisors is an integer number (70050805).

Almost surely, 2^140101609 is an apocalyptic number.

It is an amenable number.

140101609 is a deficient number, since it is larger than the sum of its proper divisors (1).

140101609 is an equidigital number, since it uses as much as digits as its factorization.

140101609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 140101609 is about 11836.4525513348. The cubic root of 140101609 is about 519.3749998383.

The spelling of 140101609 in words is "one hundred forty million, one hundred one thousand, six hundred nine".