89434778 has 4 divisors (see below), whose sum is σ = 134152170. Its totient is φ = 44717388.

The previous prime is 89434771. The next prime is 89434781. The reversal of 89434778 is 87743498.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 84953089 + 4481689 = 9217^2 + 2117^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89434771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22358693 + ... + 22358696.

Almost surely, 2^89434778 is an apocalyptic number.

89434778 is a deficient number, since it is larger than the sum of its proper divisors (44717392).

89434778 is a wasteful number, since it uses less digits than its factorization.

89434778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44717391.

The product of its digits is 1354752, while the sum is 50.

The square root of 89434778 is about 9456.9962461661. The cubic root of 89434778 is about 447.2003599416.

The spelling of 89434778 in words is "eighty-nine million, four hundred thirty-four thousand, seven hundred seventy-eight".