6858949 has 8 divisors (see below), whose sum is σ = 7087608. Its totient is φ = 6632640.

The previous prime is 6858947. The next prime is 6858953. The reversal of 6858949 is 9498586.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4870849 + 1988100 = 2207^2 + 1410^2 .

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 6858949 - 2¹ = 6858947 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 (6858947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6819 + ... + 7759.

It is an arithmetic number, because the mean of its divisors is an integer number (885951).

Almost surely, 2^6858949 is an apocalyptic number.

It is an amenable number.

6858949 is a deficient number, since it is larger than the sum of its proper divisors (228659).

6858949 is a wasteful number, since it uses less digits than its factorization.

6858949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175.

The product of its digits is 622080, while the sum is 49.

The square root of 6858949 is about 2618.9595262241. The cubic root of 6858949 is about 189.9995290847. Note that the first 3 decimals are identical.

The spelling of 6858949 in words is "six million, eight hundred fifty-eight thousand, nine hundred forty-nine".