140471279 has 6 divisors (see below), whose sum is σ = 152108136. Its totient is φ = 129665640.

The previous prime is 140471263. The next prime is 140471293. The reversal of 140471279 is 972174041.

It is not a de Polignac number, because 140471279 - 2⁴ = 140471263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140471209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 415427 + ... + 415764.

It is an arithmetic number, because the mean of its divisors is an integer number (25351356).

Almost surely, 2^140471279 is an apocalyptic number.

140471279 is a deficient number, since it is larger than the sum of its proper divisors (11636857).

140471279 is an equidigital number, since it uses as much as digits as its factorization.

140471279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831217 (or 831204 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 140471279 is about 11852.0580069455. The cubic root of 140471279 is about 519.8314036763.

The spelling of 140471279 in words is "one hundred forty million, four hundred seventy-one thousand, two hundred seventy-nine".