452777989 has 2 divisors, whose sum is σ = 452777990. Its totient is φ = 452777988.

The previous prime is 452777981. The next prime is 452778049. The reversal of 452777989 is 989777254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386436964 + 66341025 = 19658^2 + 8145^2 .

It is a cyclic number.

It is not a de Polignac number, because 452777989 - 2³ = 452777981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (452777981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226388994 + 226388995.

It is an arithmetic number, because the mean of its divisors is an integer number (226388995).

Almost surely, 2^452777989 is an apocalyptic number.

It is an amenable number.

452777989 is a deficient number, since it is larger than the sum of its proper divisors (1).

452777989 is an equidigital number, since it uses as much as digits as its factorization.

452777989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8890560, while the sum is 58.

The square root of 452777989 is about 21278.5805212660. The cubic root of 452777989 is about 767.8830868807.

The spelling of 452777989 in words is "four hundred fifty-two million, seven hundred seventy-seven thousand, nine hundred eighty-nine".