140308069 has 4 divisors (see below), whose sum is σ = 153063360. Its totient is φ = 127552780.

The previous prime is 140308067. The next prime is 140308087. The reversal of 140308069 is 960803041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140308069 - 2¹ = 140308067 is a prime.

It is a super-2 number, since 2×140308069² = 39372708453017522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140308069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140308067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6377629 + ... + 6377650.

It is an arithmetic number, because the mean of its divisors is an integer number (38265840).

Almost surely, 2^140308069 is an apocalyptic number.

It is an amenable number.

140308069 is a deficient number, since it is larger than the sum of its proper divisors (12755291).

140308069 is a wasteful number, since it uses less digits than its factorization.

140308069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12755290.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 140308069 is about 11845.1707037087. The cubic root of 140308069 is about 519.6299993663.

The spelling of 140308069 in words is "one hundred forty million, three hundred eight thousand, sixty-nine".