5393991 has 8 divisors (see below), whose sum is σ = 7223040. Its totient is φ = 3580472.

The previous prime is 5393987. The next prime is 5394061. The reversal of 5393991 is 1993935.

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

It is a cyclic number.

It is not a de Polignac number, because 5393991 - 2² = 5393987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5393911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3045 + ... + 4478.

It is an arithmetic number, because the mean of its divisors is an integer number (902880).

Almost surely, 2^5393991 is an apocalyptic number.

5393991 is a deficient number, since it is larger than the sum of its proper divisors (1829049).

5393991 is a wasteful number, since it uses less digits than its factorization.

5393991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7765.

The product of its digits is 32805, while the sum is 39.

The square root of 5393991 is about 2322.4967168976. The cubic root of 5393991 is about 175.3759645004.

The spelling of 5393991 in words is "five million, three hundred ninety-three thousand, nine hundred ninety-one".