4139445 has 8 divisors (see below), whose sum is σ = 6623136. Its totient is φ = 2207696.

The previous prime is 4139423. The next prime is 4139477. The reversal of 4139445 is 5449314.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4139445 - 2⁸ = 4139189 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137967 + ... + 137996.

It is an arithmetic number, because the mean of its divisors is an integer number (827892).

Almost surely, 2^4139445 is an apocalyptic number.

It is an amenable number.

4139445 is a deficient number, since it is larger than the sum of its proper divisors (2483691).

4139445 is a wasteful number, since it uses less digits than its factorization.

4139445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275971.

The product of its digits is 8640, while the sum is 30.

The square root of 4139445 is about 2034.5626065570. The cubic root of 4139445 is about 160.5637017738.

The spelling of 4139445 in words is "four million, one hundred thirty-nine thousand, four hundred forty-five".