2409399428 has 24 divisors (see below), whose sum is σ = 4257902880. Its totient is φ = 1192913280.

The previous prime is 2409399427. The next prime is 2409399437. The reversal of 2409399428 is 8249939042.

It is a happy number.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2409399427) 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 7 ways as a sum of consecutive naturals, for example, 165575 + ... + 179537.

It is an arithmetic number, because the mean of its divisors is an integer number (177412620).

Almost surely, 2^2409399428 is an apocalyptic number.

It is an amenable number.

2409399428 is a deficient number, since it is larger than the sum of its proper divisors (1848503452).

2409399428 is a wasteful number, since it uses less digits than its factorization.

2409399428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14387 (or 14385 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 2409399428 is about 49085.6336212542. The cubic root of 2409399428 is about 1340.6114807786.

The spelling of 2409399428 in words is "two billion, four hundred nine million, three hundred ninety-nine thousand, four hundred twenty-eight".