5991947 has 4 divisors (see below), whose sum is σ = 6452880. Its totient is φ = 5531016.

The previous prime is 5991943. The next prime is 5991949. The reversal of 5991947 is 7491995.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5991947 - 2² = 5991943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5991898 and 5991907.

It is not an unprimeable number, because it can be changed into a prime (5991943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230447 + ... + 230472.

It is an arithmetic number, because the mean of its divisors is an integer number (1613220).

Almost surely, 2^5991947 is an apocalyptic number.

5991947 is a deficient number, since it is larger than the sum of its proper divisors (460933).

5991947 is a wasteful number, since it uses less digits than its factorization.

5991947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460932.

The product of its digits is 102060, while the sum is 44.

The square root of 5991947 is about 2447.8453791038. The cubic root of 5991947 is about 181.6307269289.

The spelling of 5991947 in words is "five million, nine hundred ninety-one thousand, nine hundred forty-seven".