141639649 has 2 divisors, whose sum is σ = 141639650. Its totient is φ = 141639648.

The previous prime is 141639647. The next prime is 141639703. The reversal of 141639649 is 946936141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120846049 + 20793600 = 10993^2 + 4560^2 .

It is a cyclic number.

It is not a de Polignac number, because 141639649 - 2¹ = 141639647 is a prime.

Together with 141639647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (141639647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70819824 + 70819825.

It is an arithmetic number, because the mean of its divisors is an integer number (70819825).

Almost surely, 2^141639649 is an apocalyptic number.

It is an amenable number.

141639649 is a deficient number, since it is larger than the sum of its proper divisors (1).

141639649 is an equidigital number, since it uses as much as digits as its factorization.

141639649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 43.

The square root of 141639649 is about 11901.2456911031. The cubic root of 141639649 is about 521.2686589559.

The spelling of 141639649 in words is "one hundred forty-one million, six hundred thirty-nine thousand, six hundred forty-nine".