89478071 has 4 divisors (see below), whose sum is σ = 90703872. Its totient is φ = 88252272.

The previous prime is 89478061. The next prime is 89478097. The reversal of 89478071 is 17087498.

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

It is a cyclic number.

It is not a de Polignac number, because 89478071 - 2²² = 85283767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89478061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612791 + ... + 612936.

It is an arithmetic number, because the mean of its divisors is an integer number (22675968).

Almost surely, 2^89478071 is an apocalyptic number.

89478071 is a deficient number, since it is larger than the sum of its proper divisors (1225801).

89478071 is a wasteful number, since it uses less digits than its factorization.

89478071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225800.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 89478071 is about 9459.2849095479. The cubic root of 89478071 is about 447.2725075724.

The spelling of 89478071 in words is "eighty-nine million, four hundred seventy-eight thousand, seventy-one".