1048391 has 2 divisors, whose sum is σ = 1048392. Its totient is φ = 1048390.

The previous prime is 1048387. The next prime is 1048423. The reversal of 1048391 is 1938401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1048391 - 2² = 1048387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1048391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1048361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524195 + 524196.

It is an arithmetic number, because the mean of its divisors is an integer number (524196).

2^1048391 is an apocalyptic number.

1048391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1048391 is an equidigital number, since it uses as much as digits as its factorization.

1048391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1048391 is about 1023.9096639841. The cubic root of 1048391 is about 101.5876922595.

The spelling of 1048391 in words is "one million, forty-eight thousand, three hundred ninety-one".