1099260279 has 48 divisors (see below), whose sum is σ = 1775155200. Its totient is φ = 650928960.

The previous prime is 1099260277. The next prime is 1099260319. The reversal of 1099260279 is 9720629901.

It is not a de Polignac number, because 1099260279 - 2¹ = 1099260277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099260277) 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, 721012 + ... + 722534.

It is an arithmetic number, because the mean of its divisors is an integer number (36982400).

Almost surely, 2^1099260279 is an apocalyptic number.

1099260279 is a deficient number, since it is larger than the sum of its proper divisors (675894921).

1099260279 is a wasteful number, since it uses less digits than its factorization.

1099260279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 1099260279 is about 33155.0943144489. The cubic root of 1099260279 is about 1032.0486698473.

The spelling of 1099260279 in words is "one billion, ninety-nine million, two hundred sixty thousand, two hundred seventy-nine".