4989157 has 2 divisors, whose sum is σ = 4989158. Its totient is φ = 4989156.

The previous prime is 4989151. The next prime is 4989169. The reversal of 4989157 is 7519894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4268356 + 720801 = 2066^2 + 849^2 .

It is a cyclic number.

It is not a de Polignac number, because 4989157 - 2⁷ = 4989029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4989151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2494578 + 2494579.

It is an arithmetic number, because the mean of its divisors is an integer number (2494579).

Almost surely, 2^4989157 is an apocalyptic number.

It is an amenable number.

4989157 is a deficient number, since it is larger than the sum of its proper divisors (1).

4989157 is an equidigital number, since it uses as much as digits as its factorization.

4989157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 43.

The square root of 4989157 is about 2233.6420930847. The cubic root of 4989157 is about 170.8738967462.

The spelling of 4989157 in words is "four million, nine hundred eighty-nine thousand, one hundred fifty-seven".