140039979 has 8 divisors (see below), whose sum is σ = 188190720. Its totient is φ = 92624616.

The previous prime is 140039971. The next prime is 140039993. The reversal of 140039979 is 979930041.

140039979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 140039979 - 2³ = 140039971 is a prime.

It is a super-2 number, since 2×140039979² = 39222391436640882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140039979.

It is not an unprimeable number, because it can be changed into a prime (140039971) 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, 183399 + ... + 184160.

It is an arithmetic number, because the mean of its divisors is an integer number (23523840).

Almost surely, 2^140039979 is an apocalyptic number.

140039979 is a deficient number, since it is larger than the sum of its proper divisors (48150741).

140039979 is a wasteful number, since it uses less digits than its factorization.

140039979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367689.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 140039979 is about 11833.8488667044. The cubic root of 140039979 is about 519.2988318434.

The spelling of 140039979 in words is "one hundred forty million, thirty-nine thousand, nine hundred seventy-nine".