1025979 has 4 divisors (see below), whose sum is σ = 1367976. Its totient is φ = 683984.

The previous prime is 1025957. The next prime is 1026029. The reversal of 1025979 is 9795201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1025979 - 2¹³ = 1017787 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1025909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170994 + ... + 170999.

It is an arithmetic number, because the mean of its divisors is an integer number (341994).

2^1025979 is an apocalyptic number.

1025979 is a deficient number, since it is larger than the sum of its proper divisors (341997).

1025979 is an equidigital number, since it uses as much as digits as its factorization.

1025979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341996.

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 1025979 is about 1012.9062148096. The cubic root of 1025979 is about 100.8585740757.

The spelling of 1025979 in words is "one million, twenty-five thousand, nine hundred seventy-nine".