4396135021 has 4 divisors (see below), whose sum is σ = 4397039100. Its totient is φ = 4395230944.

The previous prime is 4396134997. The next prime is 4396135033. The reversal of 4396135021 is 1205316934.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3538465225 + 857669796 = 59485^2 + 29286^2 .

It is a cyclic number.

It is not a de Polignac number, because 4396135021 - 2¹⁵ = 4396102253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4396135091) 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, 444706 + ... + 454483.

It is an arithmetic number, because the mean of its divisors is an integer number (1099259775).

Almost surely, 2^4396135021 is an apocalyptic number.

It is an amenable number.

4396135021 is a deficient number, since it is larger than the sum of its proper divisors (904079).

4396135021 is an equidigital number, since it uses as much as digits as its factorization.

4396135021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904078.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 4396135021 is about 66303.3560311995. The cubic root of 4396135021 is about 1638.1626037528.

The spelling of 4396135021 in words is "four billion, three hundred ninety-six million, one hundred thirty-five thousand, twenty-one".