6853949 has 2 divisors, whose sum is σ = 6853950. Its totient is φ = 6853948.

The previous prime is 6853939. The next prime is 6853967. The reversal of 6853949 is 9493586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6853924 + 25 = 2618^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 6853949 - 2¹⁶ = 6788413 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6853939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3426974 + 3426975.

It is an arithmetic number, because the mean of its divisors is an integer number (3426975).

Almost surely, 2^6853949 is an apocalyptic number.

It is an amenable number.

6853949 is a deficient number, since it is larger than the sum of its proper divisors (1).

6853949 is an equidigital number, since it uses as much as digits as its factorization.

6853949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 44.

The square root of 6853949 is about 2618.0047746328. The cubic root of 6853949 is about 189.9533495811.

The spelling of 6853949 in words is "six million, eight hundred fifty-three thousand, nine hundred forty-nine".