1011997299 has 4 divisors (see below), whose sum is σ = 1349329736. Its totient is φ = 674664864.

The previous prime is 1011997297. The next prime is 1011997313. The reversal of 1011997299 is 9927991101.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1011997299 - 2¹ = 1011997297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011997291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168666214 + ... + 168666219.

It is an arithmetic number, because the mean of its divisors is an integer number (337332434).

Almost surely, 2^1011997299 is an apocalyptic number.

1011997299 is a deficient number, since it is larger than the sum of its proper divisors (337332437).

1011997299 is an equidigital number, since it uses as much as digits as its factorization.

1011997299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337332436.

The product of its (nonzero) digits is 91854, while the sum is 48.

The square root of 1011997299 is about 31811.9049885416. The cubic root of 1011997299 is about 1003.9832126180.

The spelling of 1011997299 in words is "one billion, eleven million, nine hundred ninety-seven thousand, two hundred ninety-nine".