6138949 has 4 divisors (see below), whose sum is σ = 6180300. Its totient is φ = 6097600.

The previous prime is 6138947. The next prime is 6138983. The reversal of 6138949 is 9498316.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2924100 + 3214849 = 1710^2 + 1793^2 .

It is a cyclic number.

It is not a de Polignac number, because 6138949 - 2¹ = 6138947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6138947) 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, 20452 + ... + 20749.

It is an arithmetic number, because the mean of its divisors is an integer number (1545075).

Almost surely, 2^6138949 is an apocalyptic number.

It is an amenable number.

6138949 is a deficient number, since it is larger than the sum of its proper divisors (41351).

6138949 is a wasteful number, since it uses less digits than its factorization.

6138949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41350.

The product of its digits is 46656, while the sum is 40.

The square root of 6138949 is about 2477.6902550561. The cubic root of 6138949 is about 183.1040744959.

The spelling of 6138949 in words is "six million, one hundred thirty-eight thousand, nine hundred forty-nine".