145844439 has 16 divisors (see below), whose sum is σ = 209634432. Its totient is φ = 89657568.

The previous prime is 145844423. The next prime is 145844443. The reversal of 145844439 is 934448541.

145844439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145844439 - 2⁴ = 145844423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145844439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145844239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71812 + ... + 73814.

It is an arithmetic number, because the mean of its divisors is an integer number (13102152).

Almost surely, 2^145844439 is an apocalyptic number.

145844439 is a deficient number, since it is larger than the sum of its proper divisors (63789993).

145844439 is a wasteful number, since it uses less digits than its factorization.

145844439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3886.

The product of its digits is 276480, while the sum is 42.

The square root of 145844439 is about 12076.6070980222. The cubic root of 145844439 is about 526.3766608721.

The spelling of 145844439 in words is "one hundred forty-five million, eight hundred forty-four thousand, four hundred thirty-nine".