89672991 has 4 divisors (see below), whose sum is σ = 119563992. Its totient is φ = 59781992.

The previous prime is 89672969. The next prime is 89673007. The reversal of 89672991 is 19927698.

It is a happy number.

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 89672991 - 2⁶ = 89672927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89672291) 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, 14945496 + ... + 14945501.

It is an arithmetic number, because the mean of its divisors is an integer number (29890998).

Almost surely, 2^89672991 is an apocalyptic number.

89672991 is a deficient number, since it is larger than the sum of its proper divisors (29891001).

89672991 is a wasteful number, since it uses less digits than its factorization.

89672991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29891000.

The product of its digits is 489888, while the sum is 51.

The square root of 89672991 is about 9469.5824089555. The cubic root of 89672991 is about 447.5970531151.

The spelling of 89672991 in words is "eighty-nine million, six hundred seventy-two thousand, nine hundred ninety-one".