3840653 has 4 divisors (see below), whose sum is σ = 3846780. Its totient is φ = 3834528.

The previous prime is 3840649. The next prime is 3840667. The reversal of 3840653 is 3560483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3560483 = 1663 ⋅2141.

It can be written as a sum of positive squares in 2 ways, for example, as 407044 + 3433609 = 638^2 + 1853^2 .

It is a cyclic number.

It is not a de Polignac number, because 3840653 - 2² = 3840649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840253) 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, 2000 + ... + 3417.

It is an arithmetic number, because the mean of its divisors is an integer number (961695).

Almost surely, 2^3840653 is an apocalyptic number.

It is an amenable number.

3840653 is a deficient number, since it is larger than the sum of its proper divisors (6127).

3840653 is an equidigital number, since it uses as much as digits as its factorization.

3840653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6126.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 3840653 is about 1959.7584034773. The cubic root of 3840653 is about 156.6035815623.

The spelling of 3840653 in words is "three million, eight hundred forty thousand, six hundred fifty-three".