90942481887 has 8 divisors (see below), whose sum is σ = 121448810880. Its totient is φ = 60532237080.

The previous prime is 90942481849. The next prime is 90942481891. The reversal of 90942481887 is 78818424909.

It is a happy number.

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

It is not a de Polignac number, because 90942481887 - 2¹⁴ = 90942465503 is a prime.

It is a super-3 number, since 3×90942481887³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90942481887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90942481387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24018837 + ... + 24022622.

It is an arithmetic number, because the mean of its divisors is an integer number (15181101360).

Almost surely, 2^90942481887 is an apocalyptic number.

90942481887 is a deficient number, since it is larger than the sum of its proper divisors (30506328993).

90942481887 is a wasteful number, since it uses less digits than its factorization.

90942481887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48042093.

The product of its (nonzero) digits is 9289728, while the sum is 60.

The spelling of 90942481887 in words is "ninety billion, nine hundred forty-two million, four hundred eighty-one thousand, eight hundred eighty-seven".