1099648959 has 24 divisors (see below), whose sum is σ = 1555741872. Its totient is φ = 690785280.

The previous prime is 1099648937. The next prime is 1099648967. The reversal of 1099648959 is 9598469901.

It is not a de Polignac number, because 1099648959 - 2¹² = 1099644863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099648559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206389 + ... + 211649.

It is an arithmetic number, because the mean of its divisors is an integer number (64822578).

Almost surely, 2^1099648959 is an apocalyptic number.

1099648959 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1099648959 is a deficient number, since it is larger than the sum of its proper divisors (456092913).

1099648959 is a wasteful number, since it uses less digits than its factorization.

1099648959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5495 (or 5476 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 60.

The square root of 1099648959 is about 33160.9553390731. The cubic root of 1099648959 is about 1032.1702938810.

The spelling of 1099648959 in words is "one billion, ninety-nine million, six hundred forty-eight thousand, nine hundred fifty-nine".