49447945 has 16 divisors (see below), whose sum is σ = 61535232. Its totient is φ = 38105280.

The previous prime is 49447919. The next prime is 49447949. The reversal of 49447945 is 54974494.

It is not a de Polignac number, because 49447945 - 2⁵ = 49447913 is a prime.

It is a Duffinian number.

Its product of digits (725760) is a multiple of the sum of its prime divisors (1512).

It is a junction number, because it is equal to n+sod(n) for n = 49447895 and 49447904.

It is not an unprimeable number, because it can be changed into a prime (49447949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40159 + ... + 41371.

It is an arithmetic number, because the mean of its divisors is an integer number (3845952).

Almost surely, 2^49447945 is an apocalyptic number.

It is an amenable number.

49447945 is a deficient number, since it is larger than the sum of its proper divisors (12087287).

49447945 is a wasteful number, since it uses less digits than its factorization.

49447945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512.

The product of its digits is 725760, while the sum is 46.

The square root of 49447945 is about 7031.9232788761. The cubic root of 49447945 is about 367.0422702984.

The spelling of 49447945 in words is "forty-nine million, four hundred forty-seven thousand, nine hundred forty-five".