75408893 has 8 divisors (see below), whose sum is σ = 87940800. Its totient is φ = 64635900.

The previous prime is 75408869. The next prime is 75408913. The reversal of 75408893 is 39880457.

It is not a de Polignac number, because 75408893 - 2²² = 71214589 is a prime.

It is a super-2 number, since 2×75408893² = 11373002286970898, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75408803) 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, 109583 + ... + 110268.

It is an arithmetic number, because the mean of its divisors is an integer number (10992600).

Almost surely, 2^75408893 is an apocalyptic number.

It is an amenable number.

75408893 is a deficient number, since it is larger than the sum of its proper divisors (12531907).

75408893 is an equidigital number, since it uses as much as digits as its factorization.

75408893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219872 (or 219858 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 75408893 is about 8683.8293972187. The cubic root of 75408893 is about 422.4813301275.

The spelling of 75408893 in words is "seventy-five million, four hundred eight thousand, eight hundred ninety-three".