454021489 has 2 divisors, whose sum is σ = 454021490. Its totient is φ = 454021488.

The previous prime is 454021483. The next prime is 454021517. The reversal of 454021489 is 984120454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 446688225 + 7333264 = 21135^2 + 2708^2 .

It is a cyclic number.

It is not a de Polignac number, because 454021489 - 2³ = 454021481 is a prime.

It is a super-2 number, since 2×454021489² = 412271024947554242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (454021481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227010744 + 227010745.

It is an arithmetic number, because the mean of its divisors is an integer number (227010745).

Almost surely, 2^454021489 is an apocalyptic number.

It is an amenable number.

454021489 is a deficient number, since it is larger than the sum of its proper divisors (1).

454021489 is an equidigital number, since it uses as much as digits as its factorization.

454021489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 454021489 is about 21307.7800110664. The cubic root of 454021489 is about 768.5854103407.

The spelling of 454021489 in words is "four hundred fifty-four million, twenty-one thousand, four hundred eighty-nine".