49278443 has 4 divisors (see below), whose sum is σ = 51421008. Its totient is φ = 47135880.

The previous prime is 49278421. The next prime is 49278469. The reversal of 49278443 is 34487294.

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 49278443 - 2¹⁸ = 49016299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49278443.

It is not an unprimeable number, because it can be changed into a prime (49278403) 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, 1071248 + ... + 1071293.

It is an arithmetic number, because the mean of its divisors is an integer number (12855252).

Almost surely, 2^49278443 is an apocalyptic number.

49278443 is a deficient number, since it is larger than the sum of its proper divisors (2142565).

49278443 is a wasteful number, since it uses less digits than its factorization.

49278443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142564.

The product of its digits is 193536, while the sum is 41.

The square root of 49278443 is about 7019.8606111518. The cubic root of 49278443 is about 366.6223969510.

The spelling of 49278443 in words is "forty-nine million, two hundred seventy-eight thousand, four hundred forty-three".