49278447 has 12 divisors (see below), whose sum is σ = 71386224. Its totient is φ = 32757120.

The previous prime is 49278421. The next prime is 49278469. The reversal of 49278447 is 74487294.

It is not a de Polignac number, because 49278447 - 2⁷ = 49278319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49278547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4579 + ... + 10932.

It is an arithmetic number, because the mean of its divisors is an integer number (5948852).

Almost surely, 2^49278447 is an apocalyptic number.

49278447 is a deficient number, since it is larger than the sum of its proper divisors (22107777).

49278447 is a wasteful number, since it uses less digits than its factorization.

49278447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15870 (or 15867 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 49278447 is about 7019.8608960577. The cubic root of 49278447 is about 366.6224068707.

The spelling of 49278447 in words is "forty-nine million, two hundred seventy-eight thousand, four hundred forty-seven".