140805279 has 12 divisors (see below), whose sum is σ = 207713376. Its totient is φ = 91872672.

The previous prime is 140805277. The next prime is 140805307. The reversal of 140805279 is 972508041.

It is not a de Polignac number, because 140805279 - 2¹ = 140805277 is a prime.

It is a super-2 number, since 2×140805279² = 39652253188535682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140805277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166014 + ... + 166859.

It is an arithmetic number, because the mean of its divisors is an integer number (17309448).

Almost surely, 2^140805279 is an apocalyptic number.

140805279 is a deficient number, since it is larger than the sum of its proper divisors (66908097).

140805279 is a wasteful number, since it uses less digits than its factorization.

140805279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332926 (or 332923 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 140805279 is about 11866.1400210852. The cubic root of 140805279 is about 520.2430803849.

The spelling of 140805279 in words is "one hundred forty million, eight hundred five thousand, two hundred seventy-nine".