3990423433 has 8 divisors (see below), whose sum is σ = 4165516800. Its totient is φ = 3815463168.

The previous prime is 3990423407. The next prime is 3990423449. The reversal of 3990423433 is 3343240993.

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

It is a cyclic number.

It is not a de Polignac number, because 3990423433 - 2²⁹ = 3453552521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3990423233) 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 7 ways as a sum of consecutive naturals, for example, 30633 + ... + 94441.

It is an arithmetic number, because the mean of its divisors is an integer number (520689600).

Almost surely, 2^3990423433 is an apocalyptic number.

It is an amenable number.

3990423433 is a deficient number, since it is larger than the sum of its proper divisors (175093367).

3990423433 is a wasteful number, since it uses less digits than its factorization.

3990423433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66551.

The product of its (nonzero) digits is 209952, while the sum is 40.

The square root of 3990423433 is about 63169.7984245636. The cubic root of 3990423433 is about 1586.1332185941.

The spelling of 3990423433 in words is "three billion, nine hundred ninety million, four hundred twenty-three thousand, four hundred thirty-three".