90748915 has 8 divisors (see below), whose sum is σ = 113633568. Its totient is φ = 69442560.

The previous prime is 90748891. The next prime is 90748927. The reversal of 90748915 is 51984709.

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

It is not a de Polignac number, because 90748915 - 2⁷ = 90748787 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394446 + ... + 394675.

It is an arithmetic number, because the mean of its divisors is an integer number (14204196).

Almost surely, 2^90748915 is an apocalyptic number.

90748915 is a deficient number, since it is larger than the sum of its proper divisors (22884653).

90748915 is a wasteful number, since it uses less digits than its factorization.

90748915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789149.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 90748915 is about 9526.2224937275. Note that the first 3 decimals coincide. The cubic root of 90748915 is about 449.3800764217.

The spelling of 90748915 in words is "ninety million, seven hundred forty-eight thousand, nine hundred fifteen".