145534439 has 2 divisors, whose sum is σ = 145534440. Its totient is φ = 145534438.

The previous prime is 145534427. The next prime is 145534453. The reversal of 145534439 is 934435541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145534439 - 2⁸ = 145534183 is a prime.

It is equal to p_8206967 and since 145534439 and 8206967 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145534139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72767219 + 72767220.

It is an arithmetic number, because the mean of its divisors is an integer number (72767220).

Almost surely, 2^145534439 is an apocalyptic number.

145534439 is a deficient number, since it is larger than the sum of its proper divisors (1).

145534439 is an equidigital number, since it uses as much as digits as its factorization.

145534439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 38.

The square root of 145534439 is about 12063.7655398304. The cubic root of 145534439 is about 526.0034492586.

The spelling of 145534439 in words is "one hundred forty-five million, five hundred thirty-four thousand, four hundred thirty-nine".