1599440049 has 9 divisors (see below), whose sum is σ = 2310475609. Its totient is φ = 1066213380.

The previous prime is 1599440047. The next prime is 1599440077. The reversal of 1599440049 is 9400449951.

The square root of 1599440049 is 39993.

It is a perfect power (a square), and thus also a powerful number.

1599440049 is a `hidden beast` number, since 159 + 94 + 400 + 4 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1599440049 - 2¹ = 1599440047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1599439986 and 1599440013.

It is not an unprimeable number, because it can be changed into a prime (1599440047) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 113314 + ... + 126644.

Almost surely, 2^1599440049 is an apocalyptic number.

1599440049 is the 39993-rd square number.

1599440049 is the 19997-th centered octagonal number.

It is an amenable number.

1599440049 is a deficient number, since it is larger than the sum of its proper divisors (711035560).

1599440049 is an frugal number, since it uses more digits than its factorization.

1599440049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26668 (or 13334 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The cubic root of 1599440049 is about 1169.4706371438.

The spelling of 1599440049 in words is "one billion, five hundred ninety-nine million, four hundred forty thousand, forty-nine".