140704387 has 2 divisors, whose sum is σ = 140704388. Its totient is φ = 140704386.

The previous prime is 140704373. The next prime is 140704391. The reversal of 140704387 is 783407041.

It is a strong prime.

It is an emirp because it is prime and its reverse (783407041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140704387 - 2¹⁹ = 140180099 is a prime.

It is not a weakly prime, because it can be changed into another prime (140704337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70352193 + 70352194.

It is an arithmetic number, because the mean of its divisors is an integer number (70352194).

Almost surely, 2^140704387 is an apocalyptic number.

140704387 is a deficient number, since it is larger than the sum of its proper divisors (1).

140704387 is an equidigital number, since it uses as much as digits as its factorization.

140704387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 140704387 is about 11861.8880031806. Note that the first 3 decimals coincide. The cubic root of 140704387 is about 520.1187931261.

The spelling of 140704387 in words is "one hundred forty million, seven hundred four thousand, three hundred eighty-seven".