49909243 has 4 divisors (see below), whose sum is σ = 50017968. Its totient is φ = 49800520.

The previous prime is 49909217. The next prime is 49909271. The reversal of 49909243 is 34290994.

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

It is a cyclic number.

It is not a de Polignac number, because 49909243 - 2²¹ = 47812091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49909196 and 49909205.

It is not an unprimeable number, because it can be changed into a prime (49909213) 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, 53671 + ... + 54592.

It is an arithmetic number, because the mean of its divisors is an integer number (12504492).

Almost surely, 2^49909243 is an apocalyptic number.

49909243 is a deficient number, since it is larger than the sum of its proper divisors (108725).

49909243 is a wasteful number, since it uses less digits than its factorization.

49909243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108724.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 49909243 is about 7064.6474080452. The cubic root of 49909243 is about 368.1801137645.

The spelling of 49909243 in words is "forty-nine million, nine hundred nine thousand, two hundred forty-three".