3990203893 has 8 divisors (see below), whose sum is σ = 4316415488. Its totient is φ = 3666745584.

The previous prime is 3990203891. The next prime is 3990203897. The reversal of 3990203893 is 3983020993.

It is a happy number.

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 3990203893 - 2¹ = 3990203891 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990203891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685305 + ... + 691102.

It is an arithmetic number, because the mean of its divisors is an integer number (539551936).

Almost surely, 2^3990203893 is an apocalyptic number.

It is an amenable number.

3990203893 is a deficient number, since it is larger than the sum of its proper divisors (326211595).

3990203893 is a wasteful number, since it uses less digits than its factorization.

3990203893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376643.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 3990203893 is about 63168.0607031750. The cubic root of 3990203893 is about 1586.1041301128.

The spelling of 3990203893 in words is "three billion, nine hundred ninety million, two hundred three thousand, eight hundred ninety-three".