1712991439 has 4 divisors (see below), whose sum is σ = 1754771760. Its totient is φ = 1671211120.

The previous prime is 1712991431. The next prime is 1712991457. The reversal of 1712991439 is 9341992171.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1712991439 - 2³ = 1712991431 is a prime.

It is a super-3 number, since 3×1712991439³ (a number of 29 digits) contains 333 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 (1712991431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20890099 + ... + 20890180.

It is an arithmetic number, because the mean of its divisors is an integer number (438692940).

Almost surely, 2^1712991439 is an apocalyptic number.

1712991439 is a deficient number, since it is larger than the sum of its proper divisors (41780321).

1712991439 is an equidigital number, since it uses as much as digits as its factorization.

1712991439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41780320.

The product of its digits is 122472, while the sum is 46.

The square root of 1712991439 is about 41388.3007503328. The cubic root of 1712991439 is about 1196.5156888365.

The spelling of 1712991439 in words is "one billion, seven hundred twelve million, nine hundred ninety-one thousand, four hundred thirty-nine".