4200949 has 2 divisors, whose sum is σ = 4200950. Its totient is φ = 4200948.

The previous prime is 4200947. The next prime is 4200953. The reversal of 4200949 is 9490024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3572100 + 628849 = 1890^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 4200949 - 2¹ = 4200947 is a prime.

Together with 4200947, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4200941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2100474 + 2100475.

It is an arithmetic number, because the mean of its divisors is an integer number (2100475).

Almost surely, 2^4200949 is an apocalyptic number.

It is an amenable number.

4200949 is a deficient number, since it is larger than the sum of its proper divisors (1).

4200949 is an equidigital number, since it uses as much as digits as its factorization.

4200949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 4200949 is about 2049.6216724069. The cubic root of 4200949 is about 161.3550156221.

The spelling of 4200949 in words is "four million, two hundred thousand, nine hundred forty-nine".