450401789 has 2 divisors, whose sum is σ = 450401790. Its totient is φ = 450401788.

The previous prime is 450401773. The next prime is 450401827. The reversal of 450401789 is 987104054.

It is an a-pointer prime, because the next prime (450401827) can be obtained adding 450401789 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227496889 + 222904900 = 15083^2 + 14930^2 .

It is a cyclic number.

It is not a de Polignac number, because 450401789 - 2⁴ = 450401773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450401719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225200894 + 225200895.

It is an arithmetic number, because the mean of its divisors is an integer number (225200895).

Almost surely, 2^450401789 is an apocalyptic number.

It is an amenable number.

450401789 is a deficient number, since it is larger than the sum of its proper divisors (1).

450401789 is an equidigital number, since it uses as much as digits as its factorization.

450401789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 450401789 is about 21222.6715801758. The cubic root of 450401789 is about 766.5374346972.

The spelling of 450401789 in words is "four hundred fifty million, four hundred one thousand, seven hundred eighty-nine".