49085945 has 4 divisors (see below), whose sum is σ = 58903140. Its totient is φ = 39268752.

The previous prime is 49085941. The next prime is 49085947. The reversal of 49085945 is 54958094.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54958094 = 2 ⋅27479047.

It can be written as a sum of positive squares in 2 ways, for example, as 16516096 + 32569849 = 4064^2 + 5707^2 .

It is a cyclic number.

It is not a de Polignac number, because 49085945 - 2² = 49085941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49085896 and 49085905.

It is not an unprimeable number, because it can be changed into a prime (49085941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4908590 + ... + 4908599.

It is an arithmetic number, because the mean of its divisors is an integer number (14725785).

Almost surely, 2^49085945 is an apocalyptic number.

It is an amenable number.

49085945 is a deficient number, since it is larger than the sum of its proper divisors (9817195).

49085945 is an equidigital number, since it uses as much as digits as its factorization.

49085945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9817194.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 49085945 is about 7006.1362390407. The cubic root of 49085945 is about 366.1443909569.

The spelling of 49085945 in words is "forty-nine million, eighty-five thousand, nine hundred forty-five".