1216959 has 8 divisors (see below), whose sum is σ = 1630512. Its totient is φ = 807360.

The previous prime is 1216951. The next prime is 1216961. The reversal of 1216959 is 9596121.

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

It is not a de Polignac number, because 1216959 - 2³ = 1216951 is a prime.

1216959 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216951) 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, 172 + ... + 1569.

It is an arithmetic number, because the mean of its divisors is an integer number (203814).

2^1216959 is an apocalyptic number.

1216959 is a deficient number, since it is larger than the sum of its proper divisors (413553).

1216959 is a wasteful number, since it uses less digits than its factorization.

1216959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977.

The product of its digits is 4860, while the sum is 33.

The square root of 1216959 is about 1103.1586467956. The cubic root of 1216959 is about 106.7641177554.

The spelling of 1216959 in words is "one million, two hundred sixteen thousand, nine hundred fifty-nine".