141839809 has 2 divisors, whose sum is σ = 141839810. Its totient is φ = 141839808.

The previous prime is 141839801. The next prime is 141839851. The reversal of 141839809 is 908938141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140351409 + 1488400 = 11847^2 + 1220^2 .

It is an emirp because it is prime and its reverse (908938141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 141839809 - 2³ = 141839801 is a prime.

It is not a weakly prime, because it can be changed into another prime (141839801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70919904 + 70919905.

It is an arithmetic number, because the mean of its divisors is an integer number (70919905).

Almost surely, 2^141839809 is an apocalyptic number.

It is an amenable number.

141839809 is a deficient number, since it is larger than the sum of its proper divisors (1).

141839809 is an equidigital number, since it uses as much as digits as its factorization.

141839809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 141839809 is about 11909.6519260640. The cubic root of 141839809 is about 521.5140893505.

The spelling of 141839809 in words is "one hundred forty-one million, eight hundred thirty-nine thousand, eight hundred nine".