1078999 has 8 divisors (see below), whose sum is σ = 1153152. Its totient is φ = 1007160.

The previous prime is 1078993. The next prime is 1079009. The reversal of 1078999 is 9998701.

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 1078999 - 2⁵ = 1078967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078993) 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, 444 + ... + 1534.

It is an arithmetic number, because the mean of its divisors is an integer number (144144).

2^1078999 is an apocalyptic number.

1078999 is a deficient number, since it is larger than the sum of its proper divisors (74153).

1078999 is a wasteful number, since it uses less digits than its factorization.

1078999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 1078999 is about 1038.7487665456. The cubic root of 1078999 is about 102.5668491150.

The spelling of 1078999 in words is "one million, seventy-eight thousand, nine hundred ninety-nine".