141440309 has 2 divisors, whose sum is σ = 141440310. Its totient is φ = 141440308.

The previous prime is 141440303. The next prime is 141440311. The reversal of 141440309 is 903044141.

141440309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112042225 + 29398084 = 10585^2 + 5422^2 .

It is a cyclic number.

It is not a de Polignac number, because 141440309 - 2⁴ = 141440293 is a prime.

It is a super-2 number, since 2×141440309² = 40010722020030962, which contains 22 as substring.

Together with 141440311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141440303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70720154 + 70720155.

It is an arithmetic number, because the mean of its divisors is an integer number (70720155).

Almost surely, 2^141440309 is an apocalyptic number.

It is an amenable number.

141440309 is a deficient number, since it is larger than the sum of its proper divisors (1).

141440309 is an equidigital number, since it uses as much as digits as its factorization.

141440309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 141440309 is about 11892.8679888410. The cubic root of 141440309 is about 521.0240041106.

The spelling of 141440309 in words is "one hundred forty-one million, four hundred forty thousand, three hundred nine".