4201649 has 2 divisors, whose sum is σ = 4201650. Its totient is φ = 4201648.

The previous prime is 4201633. The next prime is 4201699. The reversal of 4201649 is 9461024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3312400 + 889249 = 1820^2 + 943^2 .

It is a cyclic number.

It is not a de Polignac number, because 4201649 - 2⁴ = 4201633 is a prime.

It is not a weakly prime, because it can be changed into another prime (4201699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2100824 + 2100825.

It is an arithmetic number, because the mean of its divisors is an integer number (2100825).

Almost surely, 2^4201649 is an apocalyptic number.

It is an amenable number.

4201649 is a deficient number, since it is larger than the sum of its proper divisors (1).

4201649 is an equidigital number, since it uses as much as digits as its factorization.

4201649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 4201649 is about 2049.7924285156. The cubic root of 4201649 is about 161.3639772669.

The spelling of 4201649 in words is "four million, two hundred one thousand, six hundred forty-nine".