48009999 has 4 divisors (see below), whose sum is σ = 64013336. Its totient is φ = 32006664.

The previous prime is 48009977. The next prime is 48010007. The reversal of 48009999 is 99990084.

It is a happy number.

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

It is not a de Polignac number, because 48009999 - 2⁸ = 48009743 is a prime.

It is a Duffinian number.

48009999 is a modest number, since divided by 9999 gives 4800 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48009919) 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, 8001664 + ... + 8001669.

It is an arithmetic number, because the mean of its divisors is an integer number (16003334).

Almost surely, 2^48009999 is an apocalyptic number.

48009999 is a deficient number, since it is larger than the sum of its proper divisors (16003337).

48009999 is a wasteful number, since it uses less digits than its factorization.

48009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16003336.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 48009999 is about 6928.9248083667. The cubic root of 48009999 is about 363.4493520766.

It can be divided in two parts, 4 and 8009999, that added together give a triangular number (8010003 = T₄₀₀₂).

The spelling of 48009999 in words is "forty-eight million, nine thousand, nine hundred ninety-nine".