140197669 has 8 divisors (see below), whose sum is σ = 141402240. Its totient is φ = 138997776.

The previous prime is 140197661. The next prime is 140197679. The reversal of 140197669 is 966791041.

It is a happy number.

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 140197669 - 2³ = 140197661 is a prime.

It is a super-2 number, since 2×140197669² = 39310772786067122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140197661) 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, 83167 + ... + 84835.

It is an arithmetic number, because the mean of its divisors is an integer number (17675280).

Almost surely, 2^140197669 is an apocalyptic number.

It is an amenable number.

140197669 is a deficient number, since it is larger than the sum of its proper divisors (1204571).

140197669 is a wasteful number, since it uses less digits than its factorization.

140197669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 140197669 is about 11840.5096596388. The cubic root of 140197669 is about 519.4936750499.

The spelling of 140197669 in words is "one hundred forty million, one hundred ninety-seven thousand, six hundred sixty-nine".