2091299424 has 24 divisors (see below), whose sum is σ = 5489661240. Its totient is φ = 697099776.

The previous prime is 2091299411. The next prime is 2091299443. The reversal of 2091299424 is 4249921902.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10892089 + ... + 10892280.

It is an arithmetic number, because the mean of its divisors is an integer number (228735885).

Almost surely, 2^2091299424 is an apocalyptic number.

2091299424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2091299424 is an abundant number, since it is smaller than the sum of its proper divisors (3398361816).

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

2091299424 is a wasteful number, since it uses less digits than its factorization.

2091299424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21784382 (or 21784374 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 2091299424 is about 45730.7273504369. The cubic root of 2091299424 is about 1278.8081809961.

The spelling of 2091299424 in words is "two billion, ninety-one million, two hundred ninety-nine thousand, four hundred twenty-four".