89933971 has 4 divisors (see below), whose sum is σ = 90011944. Its totient is φ = 89856000.

The previous prime is 89933957. The next prime is 89933981. The reversal of 89933971 is 17933998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17933998 = 2 ⋅8966999.

It is a cyclic number.

It is not a de Polignac number, because 89933971 - 2¹¹ = 89931923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89933981) 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, 37230 + ... + 39571.

It is an arithmetic number, because the mean of its divisors is an integer number (22502986).

Almost surely, 2^89933971 is an apocalyptic number.

89933971 is a deficient number, since it is larger than the sum of its proper divisors (77973).

89933971 is a wasteful number, since it uses less digits than its factorization.

89933971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77972.

The product of its digits is 367416, while the sum is 49.

The square root of 89933971 is about 9483.3523081240. The cubic root of 89933971 is about 448.0308542605.

The spelling of 89933971 in words is "eighty-nine million, nine hundred thirty-three thousand, nine hundred seventy-one".