5991949 has 2 divisors, whose sum is σ = 5991950. Its totient is φ = 5991948.

The previous prime is 5991943. The next prime is 5991961. The reversal of 5991949 is 9491995.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5978025 + 13924 = 2445^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 5991949 - 2¹⁹ = 5467661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5991899 and 5991908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another 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 as a sum of consecutive naturals, namely, 2995974 + 2995975.

It is an arithmetic number, because the mean of its divisors is an integer number (2995975).

Almost surely, 2^5991949 is an apocalyptic number.

It is an amenable number.

5991949 is a deficient number, since it is larger than the sum of its proper divisors (1).

5991949 is an equidigital number, since it uses as much as digits as its factorization.

5991949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131220, while the sum is 46.

The square root of 5991949 is about 2447.8457876263. The cubic root of 5991949 is about 181.6307471372.

Adding to 5991949 its sum of digits (46), we get a palindrome (5991995).

The spelling of 5991949 in words is "five million, nine hundred ninety-one thousand, nine hundred forty-nine".