1979291499 has 16 divisors (see below), whose sum is σ = 2758213920. Its totient is φ = 1260887040.

The previous prime is 1979291491. The next prime is 1979291533. The reversal of 1979291499 is 9941929791.

It is not a de Polignac number, because 1979291499 - 2³ = 1979291491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1979291491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108832 + ... + 125709.

It is an arithmetic number, because the mean of its divisors is an integer number (172388370).

Almost surely, 2^1979291499 is an apocalyptic number.

1979291499 is a deficient number, since it is larger than the sum of its proper divisors (778922421).

1979291499 is a wasteful number, since it uses less digits than its factorization.

1979291499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234670.

The product of its digits is 3306744, while the sum is 60.

The square root of 1979291499 is about 44489.2290223151. The cubic root of 1979291499 is about 1255.5574417096.

The spelling of 1979291499 in words is "one billion, nine hundred seventy-nine million, two hundred ninety-one thousand, four hundred ninety-nine".