89291647 has 4 divisors (see below), whose sum is σ = 89411296. Its totient is φ = 89172000.

The previous prime is 89291641. The next prime is 89291669. The reversal of 89291647 is 74619298.

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 89291647 - 2³ = 89291639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89291597 and 89291606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89291641) 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, 58698 + ... + 60199.

It is an arithmetic number, because the mean of its divisors is an integer number (22352824).

Almost surely, 2^89291647 is an apocalyptic number.

89291647 is a deficient number, since it is larger than the sum of its proper divisors (119649).

89291647 is a wasteful number, since it uses less digits than its factorization.

89291647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119648.

The product of its digits is 217728, while the sum is 46.

The square root of 89291647 is about 9449.4257497480. The cubic root of 89291647 is about 446.9616667743.

The spelling of 89291647 in words is "eighty-nine million, two hundred ninety-one thousand, six hundred forty-seven".