209097484 has 24 divisors (see below), whose sum is σ = 390419568. Its totient is φ = 97643520.

The previous prime is 209097463. The next prime is 209097503. The reversal of 209097484 is 484790902.

It is a self number, because there is not a number n which added to its sum of digits gives 209097484.

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 7 ways as a sum of consecutive naturals, for example, 2829 + ... + 20644.

It is an arithmetic number, because the mean of its divisors is an integer number (16267482).

Almost surely, 2^209097484 is an apocalyptic number.

It is an amenable number.

209097484 is a deficient number, since it is larger than the sum of its proper divisors (181322084).

209097484 is a wasteful number, since it uses less digits than its factorization.

209097484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23625 (or 23623 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 209097484 is about 14460.2034563833. The cubic root of 209097484 is about 593.5394670160.

The spelling of 209097484 in words is "two hundred nine million, ninety-seven thousand, four hundred eighty-four".