1023959005 has 4 divisors (see below), whose sum is σ = 1228750812. Its totient is φ = 819167200.

The previous prime is 1023958987. The next prime is 1023959017. The reversal of 1023959005 is 5009593201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5009593201 = 17 ⋅294681953.

It can be written as a sum of positive squares in 2 ways, for example, as 663680644 + 360278361 = 25762^2 + 18981^2 .

It is not a de Polignac number, because 1023959005 - 2⁷ = 1023958877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102395896 + ... + 102395905.

It is an arithmetic number, because the mean of its divisors is an integer number (307187703).

Almost surely, 2^1023959005 is an apocalyptic number.

It is an amenable number.

1023959005 is a deficient number, since it is larger than the sum of its proper divisors (204791807).

1023959005 is an equidigital number, since it uses as much as digits as its factorization.

1023959005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204791806.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 1023959005 is about 31999.3594467139. The cubic root of 1023959005 is about 1007.9233890949.

The spelling of 1023959005 in words is "one billion, twenty-three million, nine hundred fifty-nine thousand, five".