89963691 has 4 divisors (see below), whose sum is σ = 119951592. Its totient is φ = 59975792.

The previous prime is 89963683. The next prime is 89963693. The reversal of 89963691 is 19636998.

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 89963691 - 2³ = 89963683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89963693) 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, 14993946 + ... + 14993951.

It is an arithmetic number, because the mean of its divisors is an integer number (29987898).

Almost surely, 2^89963691 is an apocalyptic number.

89963691 is a deficient number, since it is larger than the sum of its proper divisors (29987901).

89963691 is a wasteful number, since it uses less digits than its factorization.

89963691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29987900.

The product of its digits is 629856, while the sum is 51.

The square root of 89963691 is about 9484.9191351324. The cubic root of 89963691 is about 448.0802016144.

It can be divided in two parts, 8 and 9963691, that added together give a palindrome (9963699).

The spelling of 89963691 in words is "eighty-nine million, nine hundred sixty-three thousand, six hundred ninety-one".