145758839 has 2 divisors, whose sum is σ = 145758840. Its totient is φ = 145758838.

The previous prime is 145758827. The next prime is 145758883. The reversal of 145758839 is 938857541.

It is a weak prime.

It is an emirp because it is prime and its reverse (938857541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145758839 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145758439) 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, 72879419 + 72879420.

It is an arithmetic number, because the mean of its divisors is an integer number (72879420).

Almost surely, 2^145758839 is an apocalyptic number.

145758839 is a deficient number, since it is larger than the sum of its proper divisors (1).

145758839 is an equidigital number, since it uses as much as digits as its factorization.

145758839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 50.

The square root of 145758839 is about 12073.0625360759. The cubic root of 145758839 is about 526.2736592068.

The spelling of 145758839 in words is "one hundred forty-five million, seven hundred fifty-eight thousand, eight hundred thirty-nine".