90344309 has 8 divisors (see below), whose sum is σ = 101956320. Its totient is φ = 79298800.

The previous prime is 90344257. The next prime is 90344311.

90344309 is nontrivially palindromic in base 10.

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 90344309 - 2⁸ = 90344053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90344329) 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, 141287 + ... + 141924.

It is an arithmetic number, because the mean of its divisors is an integer number (12744540).

Almost surely, 2^90344309 is an apocalyptic number.

It is an amenable number.

90344309 is a deficient number, since it is larger than the sum of its proper divisors (11612011).

90344309 is a wasteful number, since it uses less digits than its factorization.

90344309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283251.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 90344309 is about 9504.9623355382. The cubic root of 90344309 is about 448.7112244747.

The spelling of 90344309 in words is "ninety million, three hundred forty-four thousand, three hundred nine".