3992001669 has 48 divisors (see below), whose sum is σ = 6296484480. Its totient is φ = 2428444800.

The previous prime is 3992001661. The next prime is 3992001677. The reversal of 3992001669 is 9661002993.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3992001661) and next prime (3992001677).

It is not a de Polignac number, because 3992001669 - 2³ = 3992001661 is a prime.

It is a super-2 number, since 2×3992001669² = 31872154650597571122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3992001661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 635904 + ... + 642150.

It is an arithmetic number, because the mean of its divisors is an integer number (131176760).

Almost surely, 2^3992001669 is an apocalyptic number.

It is an amenable number.

3992001669 is a deficient number, since it is larger than the sum of its proper divisors (2304482811).

3992001669 is a wasteful number, since it uses less digits than its factorization.

3992001669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6410 (or 6407 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 3992001669 is about 63182.2892035418. The cubic root of 3992001669 is about 1586.3422993796.

The spelling of 3992001669 in words is "three billion, nine hundred ninety-two million, one thousand, six hundred sixty-nine".