89478943 has 2 divisors, whose sum is σ = 89478944. Its totient is φ = 89478942.

The previous prime is 89478931. The next prime is 89478953. The reversal of 89478943 is 34987498.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89478943 is a prime.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89478953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44739471 + 44739472.

It is an arithmetic number, because the mean of its divisors is an integer number (44739472).

Almost surely, 2^89478943 is an apocalyptic number.

89478943 is a deficient number, since it is larger than the sum of its proper divisors (1).

89478943 is an equidigital number, since it uses as much as digits as its factorization.

89478943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 52.

The square root of 89478943 is about 9459.3310017147. The cubic root of 89478943 is about 447.2739605182.

The spelling of 89478943 in words is "eighty-nine million, four hundred seventy-eight thousand, nine hundred forty-three".