145635839 has 16 divisors (see below), whose sum is σ = 155810304. Its totient is φ = 135828000.

The previous prime is 145635827. The next prime is 145635859. The reversal of 145635839 is 938536541.

It is a cyclic number.

It is not a de Polignac number, because 145635839 - 2¹² = 145631743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145635839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145635859) 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, 164492 + ... + 165374.

It is an arithmetic number, because the mean of its divisors is an integer number (9738144).

Almost surely, 2^145635839 is an apocalyptic number.

145635839 is a deficient number, since it is larger than the sum of its proper divisors (10174465).

145635839 is a wasteful number, since it uses less digits than its factorization.

145635839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078.

The product of its digits is 388800, while the sum is 44.

The square root of 145635839 is about 12067.9674759257. The cubic root of 145635839 is about 526.1255838489.

It can be divided in two parts, 14563 and 5839, that added together give a palindrome (20402).

The spelling of 145635839 in words is "one hundred forty-five million, six hundred thirty-five thousand, eight hundred thirty-nine".