4045949 has 4 divisors (see below), whose sum is σ = 4283964. Its totient is φ = 3807936.

The previous prime is 4045933. The next prime is 4045961. The reversal of 4045949 is 9495404.

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 2617924 + 1428025 = 1618^2 + 1195^2 .

It is a cyclic number.

It is not a de Polignac number, because 4045949 - 2⁴ = 4045933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4045969) 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, 118982 + ... + 119015.

It is an arithmetic number, because the mean of its divisors is an integer number (1070991).

Almost surely, 2^4045949 is an apocalyptic number.

It is an amenable number.

4045949 is a deficient number, since it is larger than the sum of its proper divisors (238015).

4045949 is a wasteful number, since it uses less digits than its factorization.

4045949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238014.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 4045949 is about 2011.4544489001. The cubic root of 4045949 is about 159.3456216001.

It can be divided in two parts, 4045 and 949, that added together give a palindrome (4994).

The spelling of 4045949 in words is "four million, forty-five thousand, nine hundred forty-nine".