1445123339 has 4 divisors (see below), whose sum is σ = 1576498200. Its totient is φ = 1313748480.

The previous prime is 1445123291. The next prime is 1445123347. The reversal of 1445123339 is 9333215441.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1445123339 - 2⁸ = 1445123083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1445123299 and 1445123308.

It is not an unprimeable number, because it can be changed into a prime (1445123359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65687414 + ... + 65687435.

It is an arithmetic number, because the mean of its divisors is an integer number (394124550).

Almost surely, 2^1445123339 is an apocalyptic number.

1445123339 is a deficient number, since it is larger than the sum of its proper divisors (131374861).

1445123339 is a wasteful number, since it uses less digits than its factorization.

1445123339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131374860.

The product of its digits is 38880, while the sum is 35.

The square root of 1445123339 is about 38014.7779028104. Note that the first 3 decimals coincide. The cubic root of 1445123339 is about 1130.5808846755.

The spelling of 1445123339 in words is "one billion, four hundred forty-five million, one hundred twenty-three thousand, three hundred thirty-nine".