1209898 has 4 divisors (see below), whose sum is σ = 1814850. Its totient is φ = 604948.

The previous prime is 1209889. The next prime is 1209931. The reversal of 1209898 is 8989021.

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

It can be written as a sum of positive squares in only one way, i.e., 946729 + 263169 = 973^2 + 513^2 .

It is a super-3 number, since 3×1209898³ = 5313339069496376376, which contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302473 + ... + 302476.

2^1209898 is an apocalyptic number.

1209898 is a deficient number, since it is larger than the sum of its proper divisors (604952).

1209898 is an equidigital number, since it uses as much as digits as its factorization.

1209898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604951.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 1209898 is about 1099.9536353865. The cubic root of 1209898 is about 106.5572293383.

The spelling of 1209898 in words is "one million, two hundred nine thousand, eight hundred ninety-eight".