99575405 has 8 divisors (see below), whose sum is σ = 119544984. Its totient is φ = 79624000.

The previous prime is 99575387. The next prime is 99575407. The reversal of 99575405 is 50457599.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3319684 + 96255721 = 1822^2 + 9811^2 .

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

It is not a de Polignac number, because 99575405 - 2⁸ = 99575149 is a prime.

It is a super-2 number, since 2×99575405² = 19830522561828050, 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 (99575407) 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, 15815 + ... + 21195.

It is an arithmetic number, because the mean of its divisors is an integer number (14943123).

Almost surely, 2^99575405 is an apocalyptic number.

It is an amenable number.

99575405 is a deficient number, since it is larger than the sum of its proper divisors (19969579).

99575405 is a wasteful number, since it uses less digits than its factorization.

99575405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9087.

The product of its (nonzero) digits is 283500, while the sum is 44.

The square root of 99575405 is about 9978.7476669169. The cubic root of 99575405 is about 463.5010195917.

The spelling of 99575405 in words is "ninety-nine million, five hundred seventy-five thousand, four hundred five".