3893821428 has 24 divisors (see below), whose sum is σ = 10383524032. Its totient is φ = 1112520384.

The previous prime is 3893821417. The next prime is 3893821439. The reversal of 3893821428 is 8241283983.

It is an interprime number because it is at equal distance from previous prime (3893821417) and next prime (3893821439).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23177425 + ... + 23177592.

Almost surely, 2^3893821428 is an apocalyptic number.

It is an amenable number.

3893821428 is an abundant number, since it is smaller than the sum of its proper divisors (6489702604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3893821428 is a wasteful number, since it uses less digits than its factorization.

3893821428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46355031 (or 46355029 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 3893821428 is about 62400.4922095972. The cubic root of 3893821428 is about 1573.2292423515.

The spelling of 3893821428 in words is "three billion, eight hundred ninety-three million, eight hundred twenty-one thousand, four hundred twenty-eight".