841495139 has 2 divisors, whose sum is σ = 841495140. Its totient is φ = 841495138.

The previous prime is 841495133. The next prime is 841495147. The reversal of 841495139 is 931594148.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-841495139 is a prime.

It is a super-2 number, since 2×841495139² = 1416228137921258642, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 841495139.

It is not a weakly prime, because it can be changed into another prime (841495133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420747569 + 420747570.

It is an arithmetic number, because the mean of its divisors is an integer number (420747570).

Almost surely, 2^841495139 is an apocalyptic number.

841495139 is a deficient number, since it is larger than the sum of its proper divisors (1).

841495139 is an equidigital number, since it uses as much as digits as its factorization.

841495139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 44.

The square root of 841495139 is about 29008.5356231575. The cubic root of 841495139 is about 944.0982744302.

Subtracting 841495139 from its reverse (931594148), we obtain a palindrome (90099009).

The spelling of 841495139 in words is "eight hundred forty-one million, four hundred ninety-five thousand, one hundred thirty-nine".