8390693 has 4 divisors (see below), whose sum is σ = 8505708. Its totient is φ = 8275680.

The previous prime is 8390687. The next prime is 8390713. The reversal of 8390693 is 3960938.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3960938 = 2 ⋅1980469.

It can be written as a sum of positive squares in 2 ways, for example, as 1723969 + 6666724 = 1313^2 + 2582^2 .

It is a cyclic number.

It is not a de Polignac number, because 8390693 - 2¹⁰ = 8389669 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 (8390623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57398 + ... + 57543.

It is an arithmetic number, because the mean of its divisors is an integer number (2126427).

Almost surely, 2^8390693 is an apocalyptic number.

It is an amenable number.

8390693 is a deficient number, since it is larger than the sum of its proper divisors (115015).

8390693 is a wasteful number, since it uses less digits than its factorization.

8390693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115014.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 8390693 is about 2896.6692942067. The cubic root of 8390693 is about 203.2041674208.

The spelling of 8390693 in words is "eight million, three hundred ninety thousand, six hundred ninety-three".