1291914 has 24 divisors (see below), whose sum is σ = 3015012. Its totient is φ = 397440.

The previous prime is 1291909. The next prime is 1291931. The reversal of 1291914 is 4191921.

It can be written as a sum of positive squares in 2 ways, for example, as 1172889 + 119025 = 1083^2 + 345^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2527 + ... + 2994.

2^1291914 is an apocalyptic number.

1291914 is an abundant number, since it is smaller than the sum of its proper divisors (1723098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1291914 is a wasteful number, since it uses less digits than its factorization.

1291914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5542 (or 5539 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 1291914 is about 1136.6239483664. The cubic root of 1291914 is about 108.9125353955.

The spelling of 1291914 in words is "one million, two hundred ninety-one thousand, nine hundred fourteen".