1292891 has 8 divisors (see below), whose sum is σ = 1347024. Its totient is φ = 1239840.

The previous prime is 1292887. The next prime is 1292927. The reversal of 1292891 is 1982921.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1292891 - 2² = 1292887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1292801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2861 + ... + 3281.

It is an arithmetic number, because the mean of its divisors is an integer number (168378).

2^1292891 is an apocalyptic number.

1292891 is a deficient number, since it is larger than the sum of its proper divisors (54133).

1292891 is an equidigital number, since it uses as much as digits as its factorization.

1292891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its digits is 2592, while the sum is 32.

The square root of 1292891 is about 1137.0536486903. The cubic root of 1292891 is about 108.9399832326.

The spelling of 1292891 in words is "one million, two hundred ninety-two thousand, eight hundred ninety-one".