90971935 has 16 divisors (see below), whose sum is σ = 111386016. Its totient is φ = 71313408.

The previous prime is 90971921. The next prime is 90971939. The reversal of 90971935 is 53917909.

It is a cyclic number.

It is not a de Polignac number, because 90971935 - 2⁷ = 90971807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90971891 and 90971900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90971939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51019 + ... + 52771.

It is an arithmetic number, because the mean of its divisors is an integer number (6961626).

Almost surely, 2^90971935 is an apocalyptic number.

90971935 is a deficient number, since it is larger than the sum of its proper divisors (20414081).

90971935 is a wasteful number, since it uses less digits than its factorization.

90971935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962.

The product of its (nonzero) digits is 76545, while the sum is 43.

The square root of 90971935 is about 9537.9208950379. The cubic root of 90971935 is about 449.7478999466.

The spelling of 90971935 in words is "ninety million, nine hundred seventy-one thousand, nine hundred thirty-five".