90344365 has 4 divisors (see below), whose sum is σ = 108413244. Its totient is φ = 72275488.

The previous prime is 90344363. The next prime is 90344377. The reversal of 90344365 is 56344309.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56344309 = 7 ⋅8049187.

It can be written as a sum of positive squares in 2 ways, for example, as 9721924 + 80622441 = 3118^2 + 8979^2 .

It is a cyclic number.

It is not a de Polignac number, because 90344365 - 2¹ = 90344363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90344365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90344363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9034432 + ... + 9034441.

It is an arithmetic number, because the mean of its divisors is an integer number (27103311).

Almost surely, 2^90344365 is an apocalyptic number.

It is an amenable number.

90344365 is a deficient number, since it is larger than the sum of its proper divisors (18068879).

90344365 is a wasteful number, since it uses less digits than its factorization.

90344365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18068878.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 90344365 is about 9504.9652813674. The cubic root of 90344365 is about 448.7113171861.

It can be divided in two parts, 90344 and 365, that added together give a palindrome (90709).

The spelling of 90344365 in words is "ninety million, three hundred forty-four thousand, three hundred sixty-five".