89870747 has 4 divisors (see below), whose sum is σ = 91394040. Its totient is φ = 88347456.

The previous prime is 89870719. The next prime is 89870749. The reversal of 89870747 is 74707898.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74707898 = 2 ⋅37353949.

It is a cyclic number.

It is not a de Polignac number, because 89870747 - 2¹⁰ = 89869723 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89870695 and 89870704.

It is not an unprimeable number, because it can be changed into a prime (89870749) 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, 761558 + ... + 761675.

It is an arithmetic number, because the mean of its divisors is an integer number (22848510).

Almost surely, 2^89870747 is an apocalyptic number.

89870747 is a deficient number, since it is larger than the sum of its proper divisors (1523293).

89870747 is a wasteful number, since it uses less digits than its factorization.

89870747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523292.

The product of its (nonzero) digits is 790272, while the sum is 50.

The square root of 89870747 is about 9480.0183016701. The cubic root of 89870747 is about 447.9258403900.

The spelling of 89870747 in words is "eighty-nine million, eight hundred seventy thousand, seven hundred forty-seven".