1198405 has 16 divisors (see below), whose sum is σ = 1572480. Its totient is φ = 871488.

The previous prime is 1198403. The next prime is 1198411. The reversal of 1198405 is 5048911.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1198405 - 2¹ = 1198403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6606 + ... + 6784.

It is an arithmetic number, because the mean of its divisors is an integer number (98280).

2^1198405 is an apocalyptic number.

It is an amenable number.

1198405 is a deficient number, since it is larger than the sum of its proper divisors (374075).

1198405 is a wasteful number, since it uses less digits than its factorization.

1198405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1198405 is about 1094.7168583702. The cubic root of 1198405 is about 106.2187543648.

The spelling of 1198405 in words is "one million, one hundred ninety-eight thousand, four hundred five".