140509669 has 8 divisors (see below), whose sum is σ = 145784160. Its totient is φ = 135263856.

The previous prime is 140509651. The next prime is 140509673. The reversal of 140509669 is 966905041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140509669 - 2⁹ = 140509157 is a prime.

It is a super-3 number, since 3×140509669³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140509619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3082 + ... + 17044.

It is an arithmetic number, because the mean of its divisors is an integer number (18223020).

Almost surely, 2^140509669 is an apocalyptic number.

It is an amenable number.

140509669 is a deficient number, since it is larger than the sum of its proper divisors (5274491).

140509669 is a wasteful number, since it uses less digits than its factorization.

140509669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14339.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 140509669 is about 11853.6774462611. The cubic root of 140509669 is about 519.8787550163.

The spelling of 140509669 in words is "one hundred forty million, five hundred nine thousand, six hundred sixty-nine".