89949784 has 8 divisors (see below), whose sum is σ = 168655860. Its totient is φ = 44974888.

The previous prime is 89949779. The next prime is 89949787. The reversal of 89949784 is 48794998.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89949787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5621854 + ... + 5621869.

Almost surely, 2^89949784 is an apocalyptic number.

It is an amenable number.

89949784 is a deficient number, since it is larger than the sum of its proper divisors (78706076).

89949784 is a wasteful number, since it uses less digits than its factorization.

89949784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11243729 (or 11243725 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The square root of 89949784 is about 9484.1859956456. The cubic root of 89949784 is about 448.0571116603.

The spelling of 89949784 in words is "eighty-nine million, nine hundred forty-nine thousand, seven hundred eighty-four".