5309993 has 4 divisors (see below), whose sum is σ = 5718468. Its totient is φ = 4901520.

The previous prime is 5309977. The next prime is 5309999. The reversal of 5309993 is 3999035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3999035 = 5 ⋅799807.

It can be written as a sum of positive squares in 2 ways, for example, as 1968409 + 3341584 = 1403^2 + 1828^2 .

It is not a de Polignac number, because 5309993 - 2⁴ = 5309977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5309999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204218 + ... + 204243.

It is an arithmetic number, because the mean of its divisors is an integer number (1429617).

Almost surely, 2^5309993 is an apocalyptic number.

It is an amenable number.

5309993 is a deficient number, since it is larger than the sum of its proper divisors (408475).

5309993 is a wasteful number, since it uses less digits than its factorization.

5309993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408474.

The product of its (nonzero) digits is 32805, while the sum is 38.

The square root of 5309993 is about 2304.3422054895. The cubic root of 5309993 is about 174.4608495022.

The spelling of 5309993 in words is "five million, three hundred nine thousand, nine hundred ninety-three".