4991237 has 2 divisors, whose sum is σ = 4991238. Its totient is φ = 4991236.

The previous prime is 4991201. The next prime is 4991249. The reversal of 4991237 is 7321994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4879681 + 111556 = 2209^2 + 334^2 .

It is a cyclic number.

It is not a de Polignac number, because 4991237 - 2⁸ = 4990981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4991197 and 4991206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4991257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2495618 + 2495619.

It is an arithmetic number, because the mean of its divisors is an integer number (2495619).

Almost surely, 2^4991237 is an apocalyptic number.

It is an amenable number.

4991237 is a deficient number, since it is larger than the sum of its proper divisors (1).

4991237 is an equidigital number, since it uses as much as digits as its factorization.

4991237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 4991237 is about 2234.1076518378. The cubic root of 4991237 is about 170.8976394563.

The spelling of 4991237 in words is "four million, nine hundred ninety-one thousand, two hundred thirty-seven".