89949 has 4 divisors (see below), whose sum is σ = 119936. Its totient is φ = 59964.

The previous prime is 89939. The next prime is 89959. The reversal of 89949 is 94998.

89949 = 62² + 63² + ... + 79².

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (89939) and next prime (89959).

It is not a de Polignac number, because 89949 - 2⁵ = 89917 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89909) 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, 14989 + ... + 14994.

It is an arithmetic number, because the mean of its divisors is an integer number (29984).

2⁸⁹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

89949 is a deficient number, since it is larger than the sum of its proper divisors (29987).

89949 is a wasteful number, since it uses less digits than its factorization.

89949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29986.

The product of its digits is 23328, while the sum is 39.

The square root of 89949 is about 299.9149879549. The cubic root of 89949 is about 44.8055809905.

The spelling of 89949 in words is "eighty-nine thousand, nine hundred forty-nine".