140167849 has 2 divisors, whose sum is σ = 140167850. Its totient is φ = 140167848.

The previous prime is 140167847. The next prime is 140167861. The reversal of 140167849 is 948761041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76247824 + 63920025 = 8732^2 + 7995^2 .

It is a cyclic number.

It is not a de Polignac number, because 140167849 - 2¹ = 140167847 is a prime.

Together with 140167847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (140167843) 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, 70083924 + 70083925.

It is an arithmetic number, because the mean of its divisors is an integer number (70083925).

Almost surely, 2^140167849 is an apocalyptic number.

It is an amenable number.

140167849 is a deficient number, since it is larger than the sum of its proper divisors (1).

140167849 is an equidigital number, since it uses as much as digits as its factorization.

140167849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 140167849 is about 11839.2503563359. The cubic root of 140167849 is about 519.4568403912.

The spelling of 140167849 in words is "one hundred forty million, one hundred sixty-seven thousand, eight hundred forty-nine".