89630819 has 2 divisors, whose sum is σ = 89630820. Its totient is φ = 89630818.

The previous prime is 89630803. The next prime is 89630837. The reversal of 89630819 is 91803698.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89630819 - 2⁴ = 89630803 is a prime.

It is a super-2 number, since 2×89630819² = 16067367429221522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89630819.

It is not a weakly prime, because it can be changed into another prime (89630869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44815409 + 44815410.

It is an arithmetic number, because the mean of its divisors is an integer number (44815410).

Almost surely, 2^89630819 is an apocalyptic number.

89630819 is a deficient number, since it is larger than the sum of its proper divisors (1).

89630819 is an equidigital number, since it uses as much as digits as its factorization.

89630819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 89630819 is about 9467.3554385583. The cubic root of 89630819 is about 447.5268758241.

The spelling of 89630819 in words is "eighty-nine million, six hundred thirty thousand, eight hundred nineteen".