8137969 has 6 divisors (see below), whose sum is σ = 9466674. Its totient is φ = 6975360.

The previous prime is 8137957. The next prime is 8137979. The reversal of 8137969 is 9697318.

8137969 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6350400 + 1787569 = 2520^2 + 1337^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8137969 is a prime.

It is a super-2 number, since 2×8137969² = 132453078889922, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8137919) 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 5 ways as a sum of consecutive naturals, for example, 82992 + ... + 83089.

It is an arithmetic number, because the mean of its divisors is an integer number (1577779).

Almost surely, 2^8137969 is an apocalyptic number.

It is an amenable number.

8137969 is a deficient number, since it is larger than the sum of its proper divisors (1328705).

8137969 is a wasteful number, since it uses less digits than its factorization.

8137969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166095 (or 166088 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 8137969 is about 2852.7125687668. The cubic root of 8137969 is about 201.1431947453.

The spelling of 8137969 in words is "eight million, one hundred thirty-seven thousand, nine hundred sixty-nine".