2399444487 has 48 divisors (see below), whose sum is σ = 3896830080. Its totient is φ = 1409918400.

The previous prime is 2399444473. The next prime is 2399444527. The reversal of 2399444487 is 7844449932.

2399444487 is a `hidden beast` number, since 2 + 39 + 94 + 44 + 487 = 666.

It is not a de Polignac number, because 2399444487 - 2⁸ = 2399444231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2399444407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1211464 + ... + 1213442.

It is an arithmetic number, because the mean of its divisors is an integer number (81183960).

Almost surely, 2^2399444487 is an apocalyptic number.

2399444487 is a deficient number, since it is larger than the sum of its proper divisors (1497385593).

2399444487 is a wasteful number, since it uses less digits than its factorization.

2399444487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364 (or 2361 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The square root of 2399444487 is about 48984.1248467297. The cubic root of 2399444487 is about 1338.7625925526.

Subtracting 2399444487 from its reverse (7844449932), we obtain a palindrome (5445005445).

The spelling of 2399444487 in words is "two billion, three hundred ninety-nine million, four hundred forty-four thousand, four hundred eighty-seven".