1006454389 has 2 divisors, whose sum is σ = 1006454390. Its totient is φ = 1006454388.

The previous prime is 1006454363. The next prime is 1006454399. The reversal of 1006454389 is 9834546001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 815102500 + 191351889 = 28550^2 + 13833^2 .

It is a cyclic number.

It is not a de Polignac number, because 1006454389 - 2¹¹ = 1006452341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006454329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503227194 + 503227195.

It is an arithmetic number, because the mean of its divisors is an integer number (503227195).

Almost surely, 2^1006454389 is an apocalyptic number.

It is an amenable number.

1006454389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006454389 is an equidigital number, since it uses as much as digits as its factorization.

1006454389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1006454389 is about 31724.6653095033. The cubic root of 1006454389 is about 1002.1468507337.

The spelling of 1006454389 in words is "one billion, six million, four hundred fifty-four thousand, three hundred eighty-nine".