4203949 has 4 divisors (see below), whose sum is σ = 4212540. Its totient is φ = 4195360.

The previous prime is 4203931. The next prime is 4203961. The reversal of 4203949 is 9493024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 381924 + 3822025 = 618^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 4203949 - 2¹⁹ = 3679661 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 4⁵ + 2¹¹ + 0 + 3 + 9 + 4¹¹ + 9⁴ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4203949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4203919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3514 + ... + 4555.

It is an arithmetic number, because the mean of its divisors is an integer number (1053135).

Almost surely, 2^4203949 is an apocalyptic number.

It is an amenable number.

4203949 is a deficient number, since it is larger than the sum of its proper divisors (8591).

4203949 is an equidigital number, since it uses as much as digits as its factorization.

4203949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8590.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 4203949 is about 2050.3533841755. The cubic root of 4203949 is about 161.3934156650.

The spelling of 4203949 in words is "four million, two hundred three thousand, nine hundred forty-nine".