3885423950921 has 32 divisors (see below), whose sum is σ = 4188774981888. Its totient is φ = 3594536352000.

The previous prime is 3885423950899. The next prime is 3885423950957. The reversal of 3885423950921 is 1290593245883.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3885423950921 - 2³⁰ = 3884350209097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3885423950971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98969546 + ... + 99008796.

It is an arithmetic number, because the mean of its divisors is an integer number (130899218184).

Almost surely, 2^{3885423950921} is an apocalyptic number.

It is an amenable number.

3885423950921 is a deficient number, since it is larger than the sum of its proper divisors (303351030967).

3885423950921 is a wasteful number, since it uses less digits than its factorization.

3885423950921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40001.

The product of its (nonzero) digits is 18662400, while the sum is 59.

The spelling of 3885423950921 in words is "three trillion, eight hundred eighty-five billion, four hundred twenty-three million, nine hundred fifty thousand, nine hundred twenty-one".