4021653309 has 4 divisors (see below), whose sum is σ = 5362204416. Its totient is φ = 2681102204.

The previous prime is 4021653301. The next prime is 4021653319. The reversal of 4021653309 is 9033561204.

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 4021653309 - 2³ = 4021653301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4021653309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021653301) 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, 670275549 + ... + 670275554.

It is an arithmetic number, because the mean of its divisors is an integer number (1340551104).

Almost surely, 2^4021653309 is an apocalyptic number.

It is an amenable number.

4021653309 is a deficient number, since it is larger than the sum of its proper divisors (1340551107).

4021653309 is a wasteful number, since it uses less digits than its factorization.

4021653309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340551106.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 4021653309 is about 63416.5065972575. The cubic root of 4021653309 is about 1590.2602726493.

The spelling of 4021653309 in words is "four billion, twenty-one million, six hundred fifty-three thousand, three hundred nine".