4999957 has 2 divisors, whose sum is σ = 4999958. Its totient is φ = 4999956.

The previous prime is 4999949. The next prime is 4999961. The reversal of 4999957 is 7599994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4490161 + 509796 = 2119^2 + 714^2 .

It is a cyclic number.

It is not a de Polignac number, because 4999957 - 2³ = 4999949 is a prime.

4999957 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4999457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499978 + 2499979.

It is an arithmetic number, because the mean of its divisors is an integer number (2499979).

Almost surely, 2^4999957 is an apocalyptic number.

It is an amenable number.

4999957 is a deficient number, since it is larger than the sum of its proper divisors (1).

4999957 is an equidigital number, since it uses as much as digits as its factorization.

4999957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 52.

The square root of 4999957 is about 2236.0583623868. The cubic root of 4999957 is about 170.9971044732.

The spelling of 4999957 in words is "four million, nine hundred ninety-nine thousand, nine hundred fifty-seven".