454388689 has 2 divisors, whose sum is σ = 454388690. Its totient is φ = 454388688.

The previous prime is 454388659. The next prime is 454388717. The reversal of 454388689 is 986883454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240498064 + 213890625 = 15508^2 + 14625^2 .

It is a cyclic number.

It is not a de Polignac number, because 454388689 - 2¹⁵ = 454355921 is a prime.

It is a super-2 number, since 2×454388689² = 412938161382277442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (454388639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227194344 + 227194345.

It is an arithmetic number, because the mean of its divisors is an integer number (227194345).

Almost surely, 2^454388689 is an apocalyptic number.

It is an amenable number.

454388689 is a deficient number, since it is larger than the sum of its proper divisors (1).

454388689 is an equidigital number, since it uses as much as digits as its factorization.

454388689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6635520, while the sum is 55.

The square root of 454388689 is about 21316.3948405916. The cubic root of 454388689 is about 768.7925580335.

The spelling of 454388689 in words is "four hundred fifty-four million, three hundred eighty-eight thousand, six hundred eighty-nine".