89478143 has 2 divisors, whose sum is σ = 89478144. Its totient is φ = 89478142.

The previous prime is 89478133. The next prime is 89478149. The reversal of 89478143 is 34187498.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89478143 - 2⁴ = 89478127 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 89478094 and 89478103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89478149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44739071 + 44739072.

It is an arithmetic number, because the mean of its divisors is an integer number (44739072).

Almost surely, 2^89478143 is an apocalyptic number.

89478143 is a deficient number, since it is larger than the sum of its proper divisors (1).

89478143 is an equidigital number, since it uses as much as digits as its factorization.

89478143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 89478143 is about 9459.2887153316. The cubic root of 89478143 is about 447.2726275408.

The spelling of 89478143 in words is "eighty-nine million, four hundred seventy-eight thousand, one hundred forty-three".