145383239 has 2 divisors, whose sum is σ = 145383240. Its totient is φ = 145383238.

The previous prime is 145383229. The next prime is 145383241. The reversal of 145383239 is 932383541.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145383239 is a prime.

It is a super-2 number, since 2×145383239² = 42272572364262242, which contains 22 as substring.

Together with 145383241, 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 (145383229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72691619 + 72691620.

It is an arithmetic number, because the mean of its divisors is an integer number (72691620).

Almost surely, 2^145383239 is an apocalyptic number.

145383239 is a deficient number, since it is larger than the sum of its proper divisors (1).

145383239 is an equidigital number, since it uses as much as digits as its factorization.

145383239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 38.

The square root of 145383239 is about 12057.4972112790. The cubic root of 145383239 is about 525.8212259979.

The spelling of 145383239 in words is "one hundred forty-five million, three hundred eighty-three thousand, two hundred thirty-nine".