4936991 has 4 divisors (see below), whose sum is σ = 4962000. Its totient is φ = 4911984.

The previous prime is 4936963. The next prime is 4936993. The reversal of 4936991 is 1996394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1996394 = 2 ⋅998197.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4936991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4936993) 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, 12206 + ... + 12603.

It is an arithmetic number, because the mean of its divisors is an integer number (1240500).

Almost surely, 2^4936991 is an apocalyptic number.

4936991 is a deficient number, since it is larger than the sum of its proper divisors (25009).

4936991 is a wasteful number, since it uses less digits than its factorization.

4936991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25008.

The product of its digits is 52488, while the sum is 41.

The square root of 4936991 is about 2221.9340674286. The cubic root of 4936991 is about 170.2762636091.

The spelling of 4936991 in words is "four million, nine hundred thirty-six thousand, nine hundred ninety-one".