140247379 has 12 divisors (see below), whose sum is σ = 152564520. Its totient is φ = 128563200.

The previous prime is 140247377. The next prime is 140247391. The reversal of 140247379 is 973742041.

It is not a de Polignac number, because 140247379 - 2¹ = 140247377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140247377) 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, 14419 + ... + 22099.

It is an arithmetic number, because the mean of its divisors is an integer number (12713710).

Almost surely, 2^140247379 is an apocalyptic number.

140247379 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

140247379 is a deficient number, since it is larger than the sum of its proper divisors (12317141).

140247379 is an equidigital number, since it uses as much as digits as its factorization.

140247379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762 (or 7731 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 140247379 is about 11842.6086231033. The cubic root of 140247379 is about 519.5550668910. Note that the first 3 decimals are identical.

The spelling of 140247379 in words is "one hundred forty million, two hundred forty-seven thousand, three hundred seventy-nine".