8121349 has 8 divisors (see below), whose sum is σ = 8543232. Its totient is φ = 7709520.

The previous prime is 8121331. The next prime is 8121371. The reversal of 8121349 is 9431218.

It is a happy number.

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 8121349 - 2⁹ = 8120837 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 (8121319) 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 7 ways as a sum of consecutive naturals, for example, 829 + ... + 4114.

It is an arithmetic number, because the mean of its divisors is an integer number (1067904).

Almost surely, 2^8121349 is an apocalyptic number.

It is an amenable number.

8121349 is a deficient number, since it is larger than the sum of its proper divisors (421883).

8121349 is a wasteful number, since it uses less digits than its factorization.

8121349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027.

The product of its digits is 1728, while the sum is 28.

The square root of 8121349 is about 2849.7980630213. The cubic root of 8121349 is about 201.0061712749.

The spelling of 8121349 in words is "eight million, one hundred twenty-one thousand, three hundred forty-nine".