1099641402 has 24 divisors (see below), whose sum is σ = 2440669140. Its totient is φ = 357606720.

The previous prime is 1099641391. The next prime is 1099641421. The reversal of 1099641402 is 2041469901.

It is a happy number.

1099641402 is a `hidden beast` number, since 1 + 0 + 9 + 9 + 641 + 4 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 981506241 + 118135161 = 31329^2 + 10869^2 .

It is a super-2 number, since 2×1099641402² = 2418422425985051208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 744277 + ... + 745752.

Almost surely, 2^1099641402 is an apocalyptic number.

1099641402 is an abundant number, since it is smaller than the sum of its proper divisors (1341027738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1099641402 is a wasteful number, since it uses less digits than its factorization.

1099641402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490078 (or 1490075 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1099641402 is about 33160.8413946329. The cubic root of 1099641402 is about 1032.1679294511.

The spelling of 1099641402 in words is "one billion, ninety-nine million, six hundred forty-one thousand, four hundred two".