48240409 has 4 divisors (see below), whose sum is σ = 55131904. Its totient is φ = 41348916.

The previous prime is 48240397. The next prime is 48240419. The reversal of 48240409 is 90404284.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-48240409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48240419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3445737 + ... + 3445750.

It is an arithmetic number, because the mean of its divisors is an integer number (13782976).

Almost surely, 2^48240409 is an apocalyptic number.

It is an amenable number.

48240409 is a deficient number, since it is larger than the sum of its proper divisors (6891495).

48240409 is an equidigital number, since it uses as much as digits as its factorization.

48240409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6891494.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 48240409 is about 6945.5315851272. The cubic root of 48240409 is about 364.0298475102.

The spelling of 48240409 in words is "forty-eight million, two hundred forty thousand, four hundred nine".