90405113 has 2 divisors, whose sum is σ = 90405114. Its totient is φ = 90405112.

The previous prime is 90405101. The next prime is 90405127. The reversal of 90405113 is 31150409.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60341824 + 30063289 = 7768^2 + 5483^2 .

It is a cyclic number.

It is not a de Polignac number, because 90405113 - 2¹⁰ = 90404089 is a prime.

It is a super-3 number, since 3×90405113³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90405143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45202556 + 45202557.

It is an arithmetic number, because the mean of its divisors is an integer number (45202557).

Almost surely, 2^90405113 is an apocalyptic number.

It is an amenable number.

90405113 is a deficient number, since it is larger than the sum of its proper divisors (1).

90405113 is an equidigital number, since it uses as much as digits as its factorization.

90405113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 90405113 is about 9508.1603373103. The cubic root of 90405113 is about 448.8118665593.

The spelling of 90405113 in words is "ninety million, four hundred five thousand, one hundred thirteen".