3998453717 has 4 divisors (see below), whose sum is σ = 4037273760. Its totient is φ = 3959633676.

The previous prime is 3998453713. The next prime is 3998453807. The reversal of 3998453717 is 7173548993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3998453717 - 2² = 3998453713 is a prime.

It is a super-2 number, since 2×3998453717² = 31975264253982232178, which contains 22 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 (3998453713) 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, 19409867 + ... + 19410072.

It is an arithmetic number, because the mean of its divisors is an integer number (1009318440).

Almost surely, 2^3998453717 is an apocalyptic number.

It is an amenable number.

3998453717 is a deficient number, since it is larger than the sum of its proper divisors (38820043).

3998453717 is a wasteful number, since it uses less digits than its factorization.

3998453717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38820042.

The product of its digits is 5715360, while the sum is 56.

The square root of 3998453717 is about 63233.3275812684. The cubic root of 3998453717 is about 1587.1964780001.

The spelling of 3998453717 in words is "three billion, nine hundred ninety-eight million, four hundred fifty-three thousand, seven hundred seventeen".