8343390 has 64 divisors (see below), whose sum is σ = 22125312. Its totient is φ = 1996800.

The previous prime is 8343383. The next prime is 8343403. The reversal of 8343390 is 933438.

It is a happy number.

It is a super-2 number, since 2×8343390² = 139224313384200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43134 + ... + 43326.

It is an arithmetic number, because the mean of its divisors is an integer number (345708).

Almost surely, 2^8343390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8343390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11062656).

8343390 is an abundant number, since it is smaller than the sum of its proper divisors (13781922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8343390 is a wasteful number, since it uses less digits than its factorization.

8343390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 8343390 is about 2888.4926865062. The cubic root of 8343390 is about 202.8215893048.

It can be divided in two parts, 834 and 3390, that added together give a palindrome (4224).

The spelling of 8343390 in words is "eight million, three hundred forty-three thousand, three hundred ninety".