90309115 has 8 divisors (see below), whose sum is σ = 116707248. Its totient is φ = 66689760.

The previous prime is 90309077. The next prime is 90309133. The reversal of 90309115 is 51190309.

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

It is not a de Polignac number, because 90309115 - 2¹¹ = 90307067 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 694621 + ... + 694750.

It is an arithmetic number, because the mean of its divisors is an integer number (14588406).

Almost surely, 2^90309115 is an apocalyptic number.

90309115 is a deficient number, since it is larger than the sum of its proper divisors (26398133).

90309115 is a wasteful number, since it uses less digits than its factorization.

90309115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389389.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 90309115 is about 9503.1108064675. The cubic root of 90309115 is about 448.6529511348.

It can be divided in two parts, 9030 and 9115, that added together give a triangular number (18145 = T₁₉₀).

The spelling of 90309115 in words is "ninety million, three hundred nine thousand, one hundred fifteen".