1711890979 has 4 divisors (see below), whose sum is σ = 1717291584. Its totient is φ = 1706490376.

The previous prime is 1711890919. The next prime is 1711890991. The reversal of 1711890979 is 9790981171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9790981171 = 257 ⋅38097203.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1711890979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1711890919) 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, 2699827 + ... + 2700460.

It is an arithmetic number, because the mean of its divisors is an integer number (429322896).

Almost surely, 2^1711890979 is an apocalyptic number.

1711890979 is a deficient number, since it is larger than the sum of its proper divisors (5400605).

1711890979 is an equidigital number, since it uses as much as digits as its factorization.

1711890979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5400604.

The product of its (nonzero) digits is 285768, while the sum is 52.

The square root of 1711890979 is about 41375.0042779454. The cubic root of 1711890979 is about 1196.2594120707.

The spelling of 1711890979 in words is "one billion, seven hundred eleven million, eight hundred ninety thousand, nine hundred seventy-nine".