90306369 has 6 divisors (see below), whose sum is σ = 130442546. Its totient is φ = 60204240.

The previous prime is 90306347. The next prime is 90306443. The reversal of 90306369 is 96360309.

It can be written as a sum of positive squares in only one way, i.e., 81216144 + 9090225 = 9012^2 + 3015^2 .

It is not a de Polignac number, because 90306369 - 2¹⁶ = 90240833 is a prime.

It is a super-2 number, since 2×90306369² = 16310480563928322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90306269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5017012 + ... + 5017029.

Almost surely, 2^90306369 is an apocalyptic number.

It is an amenable number.

90306369 is a deficient number, since it is larger than the sum of its proper divisors (40136177).

90306369 is a wasteful number, since it uses less digits than its factorization.

90306369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10034047 (or 10034044 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 90306369 is about 9502.9663263636. The cubic root of 90306369 is about 448.6484037404.

The spelling of 90306369 in words is "ninety million, three hundred six thousand, three hundred sixty-nine".