1048991 has 2 divisors, whose sum is σ = 1048992. Its totient is φ = 1048990.

The previous prime is 1048963. The next prime is 1049011. The reversal of 1048991 is 1998401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1048991 - 2¹⁴ = 1032607 is a prime.

It is a super-2 number, since 2×1048991² = 2200764236162, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1048291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524495 + 524496.

It is an arithmetic number, because the mean of its divisors is an integer number (524496).

2^1048991 is an apocalyptic number.

1048991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1048991 is an equidigital number, since it uses as much as digits as its factorization.

1048991 is an evil number, because the sum of its binary digits is even.

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

The square root of 1048991 is about 1024.2026166731. The cubic root of 1048991 is about 101.6070682974.

The spelling of 1048991 in words is "one million, forty-eight thousand, nine hundred ninety-one".