1059991 has 8 divisors (see below), whose sum is σ = 1140480. Its totient is φ = 982008.

The previous prime is 1059941. The next prime is 1060009. The reversal of 1059991 is 1999501.

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 1059991 - 2⁹ = 1059479 is a prime.

It is a super-2 number, since 2×1059991² = 2247161840162, which contains 22 as substring.

It is a Duffinian number.

1059991 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1059931) 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, 300 + ... + 1486.

It is an arithmetic number, because the mean of its divisors is an integer number (142560).

2^1059991 is an apocalyptic number.

1059991 is a deficient number, since it is larger than the sum of its proper divisors (80489).

1059991 is a wasteful number, since it uses less digits than its factorization.

1059991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253.

The product of its (nonzero) digits is 3645, while the sum is 34.

The square root of 1059991 is about 1029.5586433030. The cubic root of 1059991 is about 101.9609936717.

The spelling of 1059991 in words is "one million, fifty-nine thousand, nine hundred ninety-one".