1023879679 has 4 divisors (see below), whose sum is σ = 1024285480. Its totient is φ = 1023473880.

The previous prime is 1023879673. The next prime is 1023879697. The reversal of 1023879679 is 9769783201.

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 1023879679 - 2³ = 1023879671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023879671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199092 + ... + 204169.

It is an arithmetic number, because the mean of its divisors is an integer number (256071370).

Almost surely, 2^1023879679 is an apocalyptic number.

1023879679 is a deficient number, since it is larger than the sum of its proper divisors (405801).

1023879679 is an equidigital number, since it uses as much as digits as its factorization.

1023879679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405800.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 1023879679 is about 31998.1199291458. The cubic root of 1023879679 is about 1007.8973605152.

The spelling of 1023879679 in words is "one billion, twenty-three million, eight hundred seventy-nine thousand, six hundred seventy-nine".