145965839 has 2 divisors, whose sum is σ = 145965840. Its totient is φ = 145965838.

The previous prime is 145965803. The next prime is 145965857. The reversal of 145965839 is 938569541.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145965839 - 2⁸ = 145965583 is a 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 (145965139) 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, 72982919 + 72982920.

It is an arithmetic number, because the mean of its divisors is an integer number (72982920).

Almost surely, 2^145965839 is an apocalyptic number.

145965839 is a deficient number, since it is larger than the sum of its proper divisors (1).

145965839 is an equidigital number, since it uses as much as digits as its factorization.

145965839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 50.

The square root of 145965839 is about 12081.6322986590. The cubic root of 145965839 is about 526.5226712483.

The spelling of 145965839 in words is "one hundred forty-five million, nine hundred sixty-five thousand, eight hundred thirty-nine".