464384021 has 2 divisors, whose sum is σ = 464384022. Its totient is φ = 464384020.

The previous prime is 464383993. The next prime is 464384023. The reversal of 464384021 is 120483464.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399000625 + 65383396 = 19975^2 + 8086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-464384021 is a prime.

Together with 464384023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (464384023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232192010 + 232192011.

It is an arithmetic number, because the mean of its divisors is an integer number (232192011).

Almost surely, 2^464384021 is an apocalyptic number.

It is an amenable number.

464384021 is a deficient number, since it is larger than the sum of its proper divisors (1).

464384021 is an equidigital number, since it uses as much as digits as its factorization.

464384021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 464384021 is about 21549.5712486351. The cubic root of 464384021 is about 774.3888465187.

The spelling of 464384021 in words is "four hundred sixty-four million, three hundred eighty-four thousand, twenty-one".