8243408 has 20 divisors (see below), whose sum is σ = 16274628. Its totient is φ = 4043520.

The previous prime is 8243393. The next prime is 8243423. The reversal of 8243408 is 8043428.

It is an interprime number because it is at equal distance from previous prime (8243393) and next prime (8243423).

It can be written as a sum of positive squares in 2 ways, for example, as 2521744 + 5721664 = 1588^2 + 2392^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4013 + ... + 5708.

Almost surely, 2^8243408 is an apocalyptic number.

It is an amenable number.

8243408 is a deficient number, since it is larger than the sum of its proper divisors (8031220).

8243408 is a wasteful number, since it uses less digits than its factorization.

8243408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9782 (or 9776 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 8243408 is about 2871.1335740435. The cubic root of 8243408 is about 202.0081688034.

The spelling of 8243408 in words is "eight million, two hundred forty-three thousand, four hundred eight".