93440 has 36 divisors (see below), whose sum is σ = 226884. Its totient is φ = 36864.

The previous prime is 93427. The next prime is 93463. The reversal of 93440 is 4439.

It can be written as a sum of positive squares in 2 ways, for example, as 43264 + 50176 = 208^2 + 224^2 .

It is a super-3 number, since 3×93440³ = 2447483338752000, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1244 + ... + 1316.

2⁹³⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 93440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113442).

93440 is an abundant number, since it is smaller than the sum of its proper divisors (133444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

93440 is an equidigital number, since it uses as much as digits as its factorization.

93440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 93440 is about 305.6795707927. The cubic root of 93440 is about 45.3778877615.

Adding to 93440 its reverse (4439), we get a palindrome (97879).

The spelling of 93440 in words is "ninety-three thousand, four hundred forty".