48399565 has 4 divisors (see below), whose sum is σ = 58079484. Its totient is φ = 38719648.

The previous prime is 48399563. The next prime is 48399569. The reversal of 48399565 is 56599384.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31573161 + 16826404 = 5619^2 + 4102^2 .

It is a cyclic number.

It is not a de Polignac number, because 48399565 - 2¹ = 48399563 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48399563) 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, 4839952 + ... + 4839961.

It is an arithmetic number, because the mean of its divisors is an integer number (14519871).

Almost surely, 2^48399565 is an apocalyptic number.

It is an amenable number.

48399565 is a deficient number, since it is larger than the sum of its proper divisors (9679919).

48399565 is an equidigital number, since it uses as much as digits as its factorization.

48399565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9679918.

The product of its digits is 1166400, while the sum is 49.

The square root of 48399565 is about 6956.9795888733. The cubic root of 48399565 is about 364.4297469293.

The spelling of 48399565 in words is "forty-eight million, three hundred ninety-nine thousand, five hundred sixty-five".