90469 has 2 divisors, whose sum is σ = 90470. Its totient is φ = 90468.

The previous prime is 90439. The next prime is 90473. The reversal of 90469 is 96409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82369 + 8100 = 287^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 90469 - 2⁵ = 90437 is a prime.

It is a super-2 number, since 2×90469² = 16369279922, which contains 22 as substring.

It is equal to p₈₇₅₈ and since 90469 and 8758 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45234 + 45235.

It is an arithmetic number, because the mean of its divisors is an integer number (45235).

2⁹⁰⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

90469 is a deficient number, since it is larger than the sum of its proper divisors (1).

90469 is an equidigital number, since it uses as much as digits as its factorization.

90469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 90469 is about 300.7806509734. The cubic root of 90469 is about 44.8917562986.

The spelling of 90469 in words is "ninety thousand, four hundred sixty-nine".