140328979 has 8 divisors (see below), whose sum is σ = 161530880. Its totient is φ = 119415816.

The previous prime is 140328977. The next prime is 140328989. The reversal of 140328979 is 979823041.

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 140328979 - 2¹ = 140328977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140328973) 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, 71139 + ... + 73084.

It is an arithmetic number, because the mean of its divisors is an integer number (20191360).

Almost surely, 2^140328979 is an apocalyptic number.

140328979 is a deficient number, since it is larger than the sum of its proper divisors (21201901).

140328979 is a wasteful number, since it uses less digits than its factorization.

140328979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144369.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 140328979 is about 11846.0533090139. The cubic root of 140328979 is about 519.6558114327.

The spelling of 140328979 in words is "one hundred forty million, three hundred twenty-eight thousand, nine hundred seventy-nine".