1199901 has 8 divisors (see below), whose sum is σ = 1622080. Its totient is φ = 788832.

The previous prime is 1199899. The next prime is 1199909. The reversal of 1199901 is 1099911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1199901 - 2¹ = 1199899 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 (1199909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2521 + ... + 2958.

It is an arithmetic number, because the mean of its divisors is an integer number (202760).

2^1199901 is an apocalyptic number.

It is an amenable number.

1199901 is a deficient number, since it is larger than the sum of its proper divisors (422179).

1199901 is an equidigital number, since it uses as much as digits as its factorization.

1199901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555.

The product of its (nonzero) digits is 729, while the sum is 30.

The square root of 1199901 is about 1095.3999269673. The cubic root of 1199901 is about 106.2629345268.

The spelling of 1199901 in words is "one million, one hundred ninety-nine thousand, nine hundred one".