4398027921 has 40 divisors (see below), whose sum is σ = 7517340864. Its totient is φ = 2510183520.

The previous prime is 4398027919. The next prime is 4398027923. The reversal of 4398027921 is 1297208934.

It is an interprime number because it is at equal distance from previous prime (4398027919) and next prime (4398027923).

It is not a de Polignac number, because 4398027921 - 2¹ = 4398027919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4398027923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 529426 + ... + 537668.

Almost surely, 2^4398027921 is an apocalyptic number.

It is an amenable number.

4398027921 is a deficient number, since it is larger than the sum of its proper divisors (3119312943).

4398027921 is an equidigital number, since it uses as much as digits as its factorization.

4398027921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9203 (or 9194 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 4398027921 is about 66317.6290363279. The cubic root of 4398027921 is about 1638.3976915456.

The spelling of 4398027921 in words is "four billion, three hundred ninety-eight million, twenty-seven thousand, nine hundred twenty-one".