1099428117 has 8 divisors (see below), whose sum is σ = 1467654720. Its totient is φ = 732076800.

The previous prime is 1099428073. The next prime is 1099428137. The reversal of 1099428117 is 7118249901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1099428117 - 2¹⁰ = 1099427093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099428137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215884 + ... + 220917.

It is an arithmetic number, because the mean of its divisors is an integer number (183456840).

Almost surely, 2^1099428117 is an apocalyptic number.

It is an amenable number.

1099428117 is a deficient number, since it is larger than the sum of its proper divisors (368226603).

1099428117 is an equidigital number, since it uses as much as digits as its factorization.

1099428117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437643.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 1099428117 is about 33157.6253220884. The cubic root of 1099428117 is about 1032.1011924915.

The spelling of 1099428117 in words is "one billion, ninety-nine million, four hundred twenty-eight thousand, one hundred seventeen".