5391965 has 4 divisors (see below), whose sum is σ = 6470364. Its totient is φ = 4313568.

The previous prime is 5391961. The next prime is 5391977. The reversal of 5391965 is 5691935.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3644281 + 1747684 = 1909^2 + 1322^2 .

It is a cyclic number.

It is not a de Polignac number, because 5391965 - 2² = 5391961 is a prime.

It is a super-2 number, since 2×5391965² = 58146573122450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5391961) 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 3 ways as a sum of consecutive naturals, for example, 539192 + ... + 539201.

It is an arithmetic number, because the mean of its divisors is an integer number (1617591).

Almost surely, 2^5391965 is an apocalyptic number.

It is an amenable number.

5391965 is a deficient number, since it is larger than the sum of its proper divisors (1078399).

5391965 is a wasteful number, since it uses less digits than its factorization.

5391965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078398.

The product of its digits is 36450, while the sum is 38.

The square root of 5391965 is about 2322.0605073942. The cubic root of 5391965 is about 175.3540044959.

The spelling of 5391965 in words is "five million, three hundred ninety-one thousand, nine hundred sixty-five".