145380439 has 2 divisors, whose sum is σ = 145380440. Its totient is φ = 145380438.

The previous prime is 145380409. The next prime is 145380479. The reversal of 145380439 is 934083541.

It is a weak prime.

It is an emirp because it is prime and its reverse (934083541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145380439 - 2⁵ = 145380407 is a prime.

It is a super-2 number, since 2×145380439² = 42270944087665442, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 145380398 and 145380407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145380409) 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, 72690219 + 72690220.

It is an arithmetic number, because the mean of its divisors is an integer number (72690220).

Almost surely, 2^145380439 is an apocalyptic number.

145380439 is a deficient number, since it is larger than the sum of its proper divisors (1).

145380439 is an equidigital number, since it uses as much as digits as its factorization.

145380439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 145380439 is about 12057.3811003883. The cubic root of 145380439 is about 525.8178503019.

The spelling of 145380439 in words is "one hundred forty-five million, three hundred eighty thousand, four hundred thirty-nine".