48399990 has 64 divisors (see below), whose sum is σ = 121761792. Its totient is φ = 12297600.

The previous prime is 48399979. The next prime is 48399991. The reversal of 48399990 is 9999384.

48399990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48399991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65664 + ... + 66396.

It is an arithmetic number, because the mean of its divisors is an integer number (1902528).

Almost surely, 2^48399990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 48399990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60880896).

48399990 is an abundant number, since it is smaller than the sum of its proper divisors (73361802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

48399990 is a wasteful number, since it uses less digits than its factorization.

48399990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845.

The product of its (nonzero) digits is 629856, while the sum is 51.

The square root of 48399990 is about 6957.0101336709. The cubic root of 48399990 is about 364.4308136206.

The spelling of 48399990 in words is "forty-eight million, three hundred ninety-nine thousand, nine hundred ninety".