1198901 has 4 divisors (see below), whose sum is σ = 1307904. Its totient is φ = 1089900.

The previous prime is 1198877. The next prime is 1198903. The reversal of 1198901 is 1098911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1098911 = 11 ⋅99901.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1198901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54485 + ... + 54506.

It is an arithmetic number, because the mean of its divisors is an integer number (326976).

2^1198901 is an apocalyptic number.

1198901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1198901 is a deficient number, since it is larger than the sum of its proper divisors (109003).

1198901 is a wasteful number, since it uses less digits than its factorization.

1198901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109002.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 1198901 is about 1094.9433775315. The cubic root of 1198901 is about 106.2334064052.

The spelling of 1198901 in words is "one million, one hundred ninety-eight thousand, nine hundred one".