424886989 has 2 divisors, whose sum is σ = 424886990. Its totient is φ = 424886988.

The previous prime is 424886953. The next prime is 424886993. The reversal of 424886989 is 989688424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 397324489 + 27562500 = 19933^2 + 5250^2 .

It is a cyclic number.

It is not a de Polignac number, because 424886989 - 2¹⁷ = 424755917 is a prime.

It is a super-2 number, since 2×424886989² = 361057906842972242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424886939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212443494 + 212443495.

It is an arithmetic number, because the mean of its divisors is an integer number (212443495).

Almost surely, 2^424886989 is an apocalyptic number.

It is an amenable number.

424886989 is a deficient number, since it is larger than the sum of its proper divisors (1).

424886989 is an equidigital number, since it uses as much as digits as its factorization.

424886989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7962624, while the sum is 58.

The square root of 424886989 is about 20612.7870265037. The cubic root of 424886989 is about 751.7806513988.

The spelling of 424886989 in words is "four hundred twenty-four million, eight hundred eighty-six thousand, nine hundred eighty-nine".