48815409 has 4 divisors (see below), whose sum is σ = 65087216. Its totient is φ = 32543604.

The previous prime is 48815401. The next prime is 48815413. The reversal of 48815409 is 90451884.

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 not a de Polignac number, because 48815409 - 2³ = 48815401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48815401) 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, 8135899 + ... + 8135904.

It is an arithmetic number, because the mean of its divisors is an integer number (16271804).

Almost surely, 2^48815409 is an apocalyptic number.

It is an amenable number.

48815409 is a deficient number, since it is larger than the sum of its proper divisors (16271807).

48815409 is a wasteful number, since it uses less digits than its factorization.

48815409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16271806.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 48815409 is about 6986.8024875475. The cubic root of 48815409 is about 365.4704860444.

The spelling of 48815409 in words is "forty-eight million, eight hundred fifteen thousand, four hundred nine".