90899469 has 8 divisors (see below), whose sum is σ = 134665920. Its totient is φ = 60599628.

The previous prime is 90899461. The next prime is 90899521. The reversal of 90899469 is 96499809.

It is a happy number.

90899469 is a `hidden beast` number, since 90 + 8 + 99 + 469 = 666.

It is not a de Polignac number, because 90899469 - 2³ = 90899461 is a prime.

It is a super-2 number, since 2×90899469² = 16525426928963922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90899461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1683297 + ... + 1683350.

It is an arithmetic number, because the mean of its divisors is an integer number (16833240).

Almost surely, 2^90899469 is an apocalyptic number.

It is an amenable number.

90899469 is a deficient number, since it is larger than the sum of its proper divisors (43766451).

90899469 is a wasteful number, since it uses less digits than its factorization.

90899469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366656 (or 3366650 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 90899469 is about 9534.1213019344. The cubic root of 90899469 is about 449.6284488617.

The spelling of 90899469 in words is "ninety million, eight hundred ninety-nine thousand, four hundred sixty-nine".