49438621 has 4 divisors (see below), whose sum is σ = 49452700. Its totient is φ = 49424544.

The previous prime is 49438577. The next prime is 49438657. The reversal of 49438621 is 12683494.

It is the 2871-st star number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 40068900 + 9369721 = 6330^2 + 3061^2 .

It is a cyclic number.

It is not a de Polignac number, because 49438621 - 2¹¹ = 49436573 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 (49438421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3025 + ... + 10393.

It is an arithmetic number, because the mean of its divisors is an integer number (12363175).

Almost surely, 2^49438621 is an apocalyptic number.

49438621 is the 4060-th hex number.

It is an amenable number.

49438621 is a deficient number, since it is larger than the sum of its proper divisors (14079).

49438621 is an equidigital number, since it uses as much as digits as its factorization.

49438621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14078.

The product of its digits is 41472, while the sum is 37.

The square root of 49438621 is about 7031.2602711036. The cubic root of 49438621 is about 367.0191987818.

The spelling of 49438621 in words is "forty-nine million, four hundred thirty-eight thousand, six hundred twenty-one".