40448399 has 4 divisors (see below), whose sum is σ = 40609800. Its totient is φ = 40287000.

The previous prime is 40448377. The next prime is 40448413. The reversal of 40448399 is 99384404.

40448399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40448399 - 2¹² = 40444303 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40448339) 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 3 ways as a sum of consecutive naturals, for example, 80324 + ... + 80825.

It is an arithmetic number, because the mean of its divisors is an integer number (10152450).

Almost surely, 2^40448399 is an apocalyptic number.

40448399 is a deficient number, since it is larger than the sum of its proper divisors (161401).

40448399 is a wasteful number, since it uses less digits than its factorization.

40448399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161400.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 40448399 is about 6359.9055810601. The cubic root of 40448399 is about 343.2683628803.

The spelling of 40448399 in words is "forty million, four hundred forty-eight thousand, three hundred ninety-nine".