3853021 has 4 divisors (see below), whose sum is σ = 3977344. Its totient is φ = 3728700.

The previous prime is 3853009. The next prime is 3853037. The reversal of 3853021 is 1203583.

3853021 = T₄₈₃ + T₄₈₄ + ... + T₅₁₃.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3853021 - 2¹³ = 3844829 is a prime.

It is a Duffinian number.

3853021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3852983 and 3853001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3853081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62115 + ... + 62176.

It is an arithmetic number, because the mean of its divisors is an integer number (994336).

Almost surely, 2^3853021 is an apocalyptic number.

3853021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3853021 is a deficient number, since it is larger than the sum of its proper divisors (124323).

3853021 is a wasteful number, since it uses less digits than its factorization.

3853021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124322.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 3853021 is about 1962.9113581616. The cubic root of 3853021 is about 156.7715041971.

The spelling of 3853021 in words is "three million, eight hundred fifty-three thousand, twenty-one".