1099891429 has 16 divisors (see below), whose sum is σ = 1355840640. Its totient is φ = 868875840.

The previous prime is 1099891421. The next prime is 1099891433. The reversal of 1099891429 is 9241989901.

It is not a de Polignac number, because 1099891429 - 2³ = 1099891421 is a prime.

It is a super-2 number, since 2×1099891429² = 2419522311175324082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099891421) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 50799 + ... + 69139.

It is an arithmetic number, because the mean of its divisors is an integer number (84740040).

Almost surely, 2^1099891429 is an apocalyptic number.

It is an amenable number.

1099891429 is a deficient number, since it is larger than the sum of its proper divisors (255949211).

1099891429 is a wasteful number, since it uses less digits than its factorization.

1099891429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19020.

The product of its (nonzero) digits is 419904, while the sum is 52.

The square root of 1099891429 is about 33164.6110937547. The cubic root of 1099891429 is about 1032.2461520103.

The spelling of 1099891429 in words is "one billion, ninety-nine million, eight hundred ninety-one thousand, four hundred twenty-nine".