1999714797 has 14 divisors (see below), whose sum is σ = 2998201742. Its totient is φ = 1333142712.

The previous prime is 1999714733. The next prime is 1999714819. The reversal of 1999714797 is 7974179991.

1999714797 is a `hidden beast` number, since 1 + 9 + 99 + 71 + 479 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1815271236 + 184443561 = 42606^2 + 13581^2 .

It is not a de Polignac number, because 1999714797 - 2⁶ = 1999714733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999714397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1370818 + ... + 1372275.

Almost surely, 2^1999714797 is an apocalyptic number.

It is an amenable number.

1999714797 is a deficient number, since it is larger than the sum of its proper divisors (998486945).

1999714797 is an frugal number, since it uses more digits than its factorization.

1999714797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743111 (or 2743096 counting only the distinct ones).

The product of its digits is 9001692, while the sum is 63.

The square root of 1999714797 is about 44718.1707698336. The cubic root of 1999714797 is about 1259.8611581707.

The spelling of 1999714797 in words is "one billion, nine hundred ninety-nine million, seven hundred fourteen thousand, seven hundred ninety-seven".