1679376889 has 4 divisors (see below), whose sum is σ = 1679872356. Its totient is φ = 1678881424.

The previous prime is 1679376833. The next prime is 1679376893. The reversal of 1679376889 is 9886739761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9886739761 = 61 ⋅162077701.

It can be written as a sum of positive squares in 2 ways, for example, as 714653289 + 964723600 = 26733^2 + 31060^2 .

It is a cyclic number.

It is not a de Polignac number, because 1679376889 - 2¹⁷ = 1679245817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1679376889.

It is not an unprimeable number, because it can be changed into a prime (1679376089) 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, 242614 + ... + 249439.

It is an arithmetic number, because the mean of its divisors is an integer number (419968089).

Almost surely, 2^1679376889 is an apocalyptic number.

It is an amenable number.

1679376889 is a deficient number, since it is larger than the sum of its proper divisors (495467).

1679376889 is an equidigital number, since it uses as much as digits as its factorization.

1679376889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495466.

The product of its digits is 27433728, while the sum is 64.

The square root of 1679376889 is about 40980.2011830103. The cubic root of 1679376889 is about 1188.6373992372.

The spelling of 1679376889 in words is "one billion, six hundred seventy-nine million, three hundred seventy-six thousand, eight hundred eighty-nine".