1979843377 has 4 divisors (see below), whose sum is σ = 2084045680. Its totient is φ = 1875641076.

The previous prime is 1979843357. The next prime is 1979843399. The reversal of 1979843377 is 7733489791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1979843377 - 2¹¹ = 1979841329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1979843357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52101123 + ... + 52101160.

It is an arithmetic number, because the mean of its divisors is an integer number (521011420).

Almost surely, 2^1979843377 is an apocalyptic number.

It is an amenable number.

1979843377 is a deficient number, since it is larger than the sum of its proper divisors (104202303).

1979843377 is a wasteful number, since it uses less digits than its factorization.

1979843377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104202302.

The product of its digits is 8001504, while the sum is 58.

The square root of 1979843377 is about 44495.4309676848. The cubic root of 1979843377 is about 1255.6741248997.

The spelling of 1979843377 in words is "one billion, nine hundred seventy-nine million, eight hundred forty-three thousand, three hundred seventy-seven".