1213899 has 8 divisors (see below), whose sum is σ = 1625232. Its totient is φ = 805920.

The previous prime is 1213897. The next prime is 1213907. The reversal of 1213899 is 9983121.

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

It is not a de Polignac number, because 1213899 - 2¹ = 1213897 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1213897) 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, 189 + ... + 1569.

It is an arithmetic number, because the mean of its divisors is an integer number (203154).

2^1213899 is an apocalyptic number.

1213899 is a deficient number, since it is larger than the sum of its proper divisors (411333).

1213899 is a wasteful number, since it uses less digits than its factorization.

1213899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677.

The product of its digits is 3888, while the sum is 33.

The square root of 1213899 is about 1101.7708473181. The cubic root of 1213899 is about 106.6745577929.

It can be divided in two parts, 1213 and 899, that added together give a palindrome (2112).

The spelling of 1213899 in words is "one million, two hundred thirteen thousand, eight hundred ninety-nine".