93440581 has 8 divisors (see below), whose sum is σ = 104098680. Its totient is φ = 83278272.

The previous prime is 93440569. The next prime is 93440617. The reversal of 93440581 is 18504439.

It can be written as a sum of positive squares in 4 ways, for example, as 9025 + 93431556 = 95^2 + 9666^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 93440581 - 2¹³ = 93432389 is a prime.

It is a super-2 number, since 2×93440581² = 17462284355235122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93440981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123550 + ... + 124303.

It is an arithmetic number, because the mean of its divisors is an integer number (13012335).

Almost surely, 2^93440581 is an apocalyptic number.

It is an amenable number.

93440581 is a deficient number, since it is larger than the sum of its proper divisors (10658099).

93440581 is a wasteful number, since it uses less digits than its factorization.

93440581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247895.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 93440581 is about 9666.4668312678. The cubic root of 93440581 is about 453.7798181297.

The spelling of 93440581 in words is "ninety-three million, four hundred forty thousand, five hundred eighty-one".