48279509 has 4 divisors (see below), whose sum is σ = 49457100. Its totient is φ = 47101920.

The previous prime is 48279467. The next prime is 48279521. The reversal of 48279509 is 90597284.

It is a happy number.

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 28654609 + 19624900 = 5353^2 + 4430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48279509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 48279509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48279559) 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, 588734 + ... + 588815.

It is an arithmetic number, because the mean of its divisors is an integer number (12364275).

Almost surely, 2^48279509 is an apocalyptic number.

It is an amenable number.

48279509 is a deficient number, since it is larger than the sum of its proper divisors (1177591).

48279509 is a wasteful number, since it uses less digits than its factorization.

48279509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177590.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 48279509 is about 6948.3457743552. The cubic root of 48279509 is about 364.1281725695.

The spelling of 48279509 in words is "forty-eight million, two hundred seventy-nine thousand, five hundred nine".