1979093979 has 40 divisors (see below), whose sum is σ = 3147210000. Its totient is φ = 1235824128.

The previous prime is 1979093953. The next prime is 1979093993. The reversal of 1979093979 is 9793909791.

It is a de Polignac number, because none of the positive numbers 2^k-1979093979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1979093579) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 129747 + ... + 144195.

It is an arithmetic number, because the mean of its divisors is an integer number (78680250).

Almost surely, 2^1979093979 is an apocalyptic number.

1979093979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1979093979 is a deficient number, since it is larger than the sum of its proper divisors (1168116021).

1979093979 is a wasteful number, since it uses less digits than its factorization.

1979093979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14569 (or 14560 counting only the distinct ones).

The product of its (nonzero) digits is 8680203, while the sum is 63.

The square root of 1979093979 is about 44487.0091037822. The cubic root of 1979093979 is about 1255.5156749198.

The spelling of 1979093979 in words is "one billion, nine hundred seventy-nine million, ninety-three thousand, nine hundred seventy-nine".