90059813 has 4 divisors (see below), whose sum is σ = 92493900. Its totient is φ = 87625728.

The previous prime is 90059807. The next prime is 90059843. The reversal of 90059813 is 31895009.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79156609 + 10903204 = 8897^2 + 3302^2 .

It is a cyclic number.

It is not a de Polignac number, because 90059813 - 2¹⁰ = 90058789 is a prime.

It is a super-2 number, since 2×90059813² = 16221539835189938, 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 (90059843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1216988 + ... + 1217061.

It is an arithmetic number, because the mean of its divisors is an integer number (23123475).

Almost surely, 2^90059813 is an apocalyptic number.

It is an amenable number.

90059813 is a deficient number, since it is larger than the sum of its proper divisors (2434087).

90059813 is a wasteful number, since it uses less digits than its factorization.

90059813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434086.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 90059813 is about 9489.9848788078. The cubic root of 90059813 is about 448.2397290645.

The spelling of 90059813 in words is "ninety million, fifty-nine thousand, eight hundred thirteen".