1211798 has 16 divisors (see below), whose sum is σ = 2100384. Its totient is φ = 513600.

The previous prime is 1211797. The next prime is 1211807. The reversal of 1211798 is 8971121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 986 + ... + 1842.

It is an arithmetic number, because the mean of its divisors is an integer number (131274).

2^1211798 is an apocalyptic number.

1211798 is a deficient number, since it is larger than the sum of its proper divisors (888586).

1211798 is a wasteful number, since it uses less digits than its factorization.

1211798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967.

The product of its digits is 1008, while the sum is 29.

The square root of 1211798 is about 1100.8169693459. The cubic root of 1211798 is about 106.6129786243.

The spelling of 1211798 in words is "one million, two hundred eleven thousand, seven hundred ninety-eight".