90115087447 has 8 divisors (see below), whose sum is σ = 112351277952. Its totient is φ = 70219548600.

The previous prime is 90115087429. The next prime is 90115087451. The reversal of 90115087447 is 74478051109.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 90115087447 - 2¹¹ = 90115085399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90115087397 and 90115087406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90115087427) 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, 585162829 + ... + 585162982.

It is an arithmetic number, because the mean of its divisors is an integer number (14043909744).

Almost surely, 2^90115087447 is an apocalyptic number.

90115087447 is a deficient number, since it is larger than the sum of its proper divisors (22236190505).

90115087447 is a wasteful number, since it uses less digits than its factorization.

90115087447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170325829.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 90115087447 in words is "ninety billion, one hundred fifteen million, eighty-seven thousand, four hundred forty-seven".