4300400021 has 4 divisors (see below), whose sum is σ = 4370898444. Its totient is φ = 4229901600.

The previous prime is 4300399993. The next prime is 4300400033. The reversal of 4300400021 is 1200040034.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1200040034 = 2 ⋅600020017.

It can be written as a sum of positive squares in 2 ways, for example, as 1029703921 + 3270696100 = 32089^2 + 57190^2 .

It is a cyclic number.

It is not a de Polignac number, because 4300400021 - 2²² = 4296205717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4300399969 and 4300400005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4300400051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35249120 + ... + 35249241.

It is an arithmetic number, because the mean of its divisors is an integer number (1092724611).

Almost surely, 2^4300400021 is an apocalyptic number.

It is an amenable number.

4300400021 is a deficient number, since it is larger than the sum of its proper divisors (70498423).

4300400021 is an equidigital number, since it uses as much as digits as its factorization.

4300400021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70498422.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 4300400021 is about 65577.4353036164. The cubic root of 4300400021 is about 1626.1837555018.

Adding to 4300400021 its reverse (1200040034), we get a palindrome (5500440055).

The spelling of 4300400021 in words is "four billion, three hundred million, four hundred thousand, twenty-one".