90380513 has 4 divisors (see below), whose sum is σ = 90517908. Its totient is φ = 90243120.

The previous prime is 90380489. The next prime is 90380519. The reversal of 90380513 is 31508309.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31888609 + 58491904 = 5647^2 + 7648^2 .

It is a cyclic number.

It is not a de Polignac number, because 90380513 - 2¹² = 90376417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90380519) 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, 67706 + ... + 69027.

It is an arithmetic number, because the mean of its divisors is an integer number (22629477).

Almost surely, 2^90380513 is an apocalyptic number.

It is an amenable number.

90380513 is a deficient number, since it is larger than the sum of its proper divisors (137395).

90380513 is a wasteful number, since it uses less digits than its factorization.

90380513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137394.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 90380513 is about 9506.8666236568. The cubic root of 90380513 is about 448.7711543580.

The spelling of 90380513 in words is "ninety million, three hundred eighty thousand, five hundred thirteen".