90928971 has 48 divisors (see below), whose sum is σ = 161740800. Its totient is φ = 48040704.

The previous prime is 90928969. The next prime is 90928991. The reversal of 90928971 is 17982909.

It is not a de Polignac number, because 90928971 - 2¹ = 90928969 is a prime.

It is a super-4 number, since 4×90928971⁴ (a number of 33 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (90928931) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 62470 + ... + 63908.

It is an arithmetic number, because the mean of its divisors is an integer number (3369600).

Almost surely, 2^90928971 is an apocalyptic number.

90928971 is a deficient number, since it is larger than the sum of its proper divisors (70811829).

90928971 is a wasteful number, since it uses less digits than its factorization.

90928971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528 (or 1525 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 90928971 is about 9535.6683562297. The cubic root of 90928971 is about 449.6770868564.

The spelling of 90928971 in words is "ninety million, nine hundred twenty-eight thousand, nine hundred seventy-one".