5043649 has 4 divisors (see below), whose sum is σ = 5431636. Its totient is φ = 4655664.

The previous prime is 5043641. The next prime is 5043653. The reversal of 5043649 is 9463405.

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 3240000 + 1803649 = 1800^2 + 1343^2 .

It is not a de Polignac number, because 5043649 - 2³ = 5043641 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 5⁷ + 0 + 4² + 3¹¹ + 6⁴ + 4⁶ + 9⁷ .

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 5043649.

It is not an unprimeable number, because it can be changed into a prime (5043641) 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, 193974 + ... + 193999.

It is an arithmetic number, because the mean of its divisors is an integer number (1357909).

Almost surely, 2^5043649 is an apocalyptic number.

It is an amenable number.

5043649 is a deficient number, since it is larger than the sum of its proper divisors (387987).

5043649 is a wasteful number, since it uses less digits than its factorization.

5043649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387986.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 5043649 is about 2245.8069819110. The cubic root of 5043649 is about 171.4937452918.

The spelling of 5043649 in words is "five million, forty-three thousand, six hundred forty-nine".