6985949 has 4 divisors (see below), whose sum is σ = 7156380. Its totient is φ = 6815520.

The previous prime is 6985931. The next prime is 6985961. The reversal of 6985949 is 9495896.

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 1249924 + 5736025 = 1118^2 + 2395^2 .

It is a cyclic number.

It is not a de Polignac number, because 6985949 - 2¹² = 6981853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6985897 and 6985906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6985969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85154 + ... + 85235.

It is an arithmetic number, because the mean of its divisors is an integer number (1789095).

Almost surely, 2^6985949 is an apocalyptic number.

It is an amenable number.

6985949 is a deficient number, since it is larger than the sum of its proper divisors (170431).

6985949 is a wasteful number, since it uses less digits than its factorization.

6985949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170430.

The product of its digits is 699840, while the sum is 50.

The square root of 6985949 is about 2643.0945877891. The cubic root of 6985949 is about 191.1650392274.

The spelling of 6985949 in words is "six million, nine hundred eighty-five thousand, nine hundred forty-nine".