4368794021 has 2 divisors, whose sum is σ = 4368794022. Its totient is φ = 4368794020.

The previous prime is 4368793993. The next prime is 4368794077. The reversal of 4368794021 is 1204978634.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2283501796 + 2085292225 = 47786^2 + 45665^2 .

It is a cyclic number.

It is not a de Polignac number, because 4368794021 - 2¹⁸ = 4368531877 is a prime.

It is a super-2 number, since 2×4368794021² = 38172722395850696882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4368794321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2184397010 + 2184397011.

It is an arithmetic number, because the mean of its divisors is an integer number (2184397011).

Almost surely, 2^4368794021 is an apocalyptic number.

It is an amenable number.

4368794021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4368794021 is an equidigital number, since it uses as much as digits as its factorization.

4368794021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 4368794021 is about 66096.8533365999. The cubic root of 4368794021 is about 1634.7594493777.

The spelling of 4368794021 in words is "four billion, three hundred sixty-eight million, seven hundred ninety-four thousand, twenty-one".