90471 has 8 divisors (see below), whose sum is σ = 123120. Its totient is φ = 59072.

The previous prime is 90469. The next prime is 90473. The reversal of 90471 is 17409.

Added to its reverse (17409) it gives a triangular number (107880 = T₄₆₄).

It is an interprime number because it is at equal distance from previous prime (90469) and next prime (90473).

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 90471 - 2¹ = 90469 is a prime.

It is a super-3 number, since 3×90471³ = 2221515904671333, which contains 333 as substring.

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90473) 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, 126 + ... + 443.

It is an arithmetic number, because the mean of its divisors is an integer number (15390).

2⁹⁰⁴⁷¹ is an apocalyptic number.

90471 is a deficient number, since it is larger than the sum of its proper divisors (32649).

90471 is a wasteful number, since it uses less digits than its factorization.

90471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 90471 is about 300.7839756370. The cubic root of 90471 is about 44.8920871038.

Adding to 90471 its reverse (17409), we get a triangular number (107880 = T₄₆₄).

It can be divided in two parts, 90 and 471, that added together give a triangular number (561 = T₃₃).

The spelling of 90471 in words is "ninety thousand, four hundred seventy-one".