6139445 has 16 divisors (see below), whose sum is σ = 8210160. Its totient is φ = 4376064.

The previous prime is 6139423. The next prime is 6139453. The reversal of 6139445 is 5449316.

It can be written as a sum of positive squares in 8 ways, for example, as 18769 + 6120676 = 137^2 + 2474^2 .

It is a cyclic number.

It is not a de Polignac number, because 6139445 - 2¹⁸ = 5877301 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257 + ... + 3513.

It is an arithmetic number, because the mean of its divisors is an integer number (513135).

Almost surely, 2^6139445 is an apocalyptic number.

6139445 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6139445 is a deficient number, since it is larger than the sum of its proper divisors (2070715).

6139445 is a wasteful number, since it uses less digits than its factorization.

6139445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304.

The product of its digits is 12960, while the sum is 32.

The square root of 6139445 is about 2477.7903462561. The cubic root of 6139445 is about 183.1090056969.

The spelling of 6139445 in words is "six million, one hundred thirty-nine thousand, four hundred forty-five".