1078993 has 2 divisors, whose sum is σ = 1078994. Its totient is φ = 1078992.

The previous prime is 1078981. The next prime is 1079009. The reversal of 1078993 is 3998701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 543169 + 535824 = 737^2 + 732^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1078993 is a prime.

1078993 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1078943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539496 + 539497.

It is an arithmetic number, because the mean of its divisors is an integer number (539497).

2^1078993 is an apocalyptic number.

It is an amenable number.

1078993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078993 is an equidigital number, since it uses as much as digits as its factorization.

1078993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1078993 is about 1038.7458784515. The cubic root of 1078993 is about 102.5666589998.

It can be divided in two parts, 10 and 78993, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 1078993 in words is "one million, seventy-eight thousand, nine hundred ninety-three".