8393421 has 8 divisors (see below), whose sum is σ = 11780320. Its totient is φ = 5301072.

The previous prime is 8393419. The next prime is 8393423. The reversal of 8393421 is 1243938.

It is an interprime number because it is at equal distance from previous prime (8393419) and next prime (8393423).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8393421 - 2¹ = 8393419 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8393423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73570 + ... + 73683.

It is an arithmetic number, because the mean of its divisors is an integer number (1472540).

Almost surely, 2^8393421 is an apocalyptic number.

It is an amenable number.

8393421 is a deficient number, since it is larger than the sum of its proper divisors (3386899).

8393421 is a wasteful number, since it uses less digits than its factorization.

8393421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147275.

The product of its digits is 5184, while the sum is 30.

The square root of 8393421 is about 2897.1401415879. The cubic root of 8393421 is about 203.2261870920.

The spelling of 8393421 in words is "eight million, three hundred ninety-three thousand, four hundred twenty-one".