1716039949 has 4 divisors (see below), whose sum is σ = 1848043036. Its totient is φ = 1584036864.

The previous prime is 1716039911. The next prime is 1716039961. The reversal of 1716039949 is 9499306171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9499306171 = 43 ⋅220914097.

It can be written as a sum of positive squares in 2 ways, for example, as 461605225 + 1254434724 = 21485^2 + 35418^2 .

It is a cyclic number.

It is not a de Polignac number, because 1716039949 - 2¹⁷ = 1715908877 is a prime.

It is a super-4 number, since 4×1716039949⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1716039749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66001524 + ... + 66001549.

It is an arithmetic number, because the mean of its divisors is an integer number (462010759).

Almost surely, 2^1716039949 is an apocalyptic number.

It is an amenable number.

1716039949 is a deficient number, since it is larger than the sum of its proper divisors (132003087).

1716039949 is a wasteful number, since it uses less digits than its factorization.

1716039949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132003086.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 1716039949 is about 41425.1125405834. The cubic root of 1716039949 is about 1197.2250577016.

The spelling of 1716039949 in words is "one billion, seven hundred sixteen million, thirty-nine thousand, nine hundred forty-nine".