3998692653 has 8 divisors (see below), whose sum is σ = 5331882816. Its totient is φ = 2665648800.

The previous prime is 3998692619. The next prime is 3998692661. The reversal of 3998692653 is 3562968993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3998692653 - 2¹⁶ = 3998627117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998692673) 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 7 ways as a sum of consecutive naturals, for example, 83688 + ... + 122478.

It is an arithmetic number, because the mean of its divisors is an integer number (666485352).

Almost surely, 2^3998692653 is an apocalyptic number.

It is an amenable number.

3998692653 is a deficient number, since it is larger than the sum of its proper divisors (1333190163).

3998692653 is a wasteful number, since it uses less digits than its factorization.

3998692653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73155.

The product of its digits is 18895680, while the sum is 60.

The square root of 3998692653 is about 63235.2168731950. The cubic root of 3998692653 is about 1587.2280927901.

The spelling of 3998692653 in words is "three billion, nine hundred ninety-eight million, six hundred ninety-two thousand, six hundred fifty-three".