93499821 has 6 divisors (see below), whose sum is σ = 135055310. Its totient is φ = 62333208.

The previous prime is 93499811. The next prime is 93499849. The reversal of 93499821 is 12899439.

It can be written as a sum of positive squares in only one way, i.e., 89984196 + 3515625 = 9486^2 + 1875^2 .

It is not a de Polignac number, because 93499821 - 2⁵ = 93499789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93499801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5194426 + ... + 5194443.

Almost surely, 2^93499821 is an apocalyptic number.

It is an amenable number.

93499821 is a deficient number, since it is larger than the sum of its proper divisors (41555489).

93499821 is a wasteful number, since it uses less digits than its factorization.

93499821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10388875 (or 10388872 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 93499821 is about 9669.5305470328. The cubic root of 93499821 is about 453.8756945223.

The spelling of 93499821 in words is "ninety-three million, four hundred ninety-nine thousand, eight hundred twenty-one".