90393295540 has 24 divisors (see below), whose sum is σ = 189852483240. Its totient is φ = 36152258688.

The previous prime is 90393295519. The next prime is 90393295541. The reversal of 90393295540 is 4559239309.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 58528189476 + 31865106064 = 241926^2 + 178508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90393295541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168027 + ... + 457186.

It is an arithmetic number, because the mean of its divisors is an integer number (7910520135).

Almost surely, 2^90393295540 is an apocalyptic number.

It is an amenable number.

90393295540 is an abundant number, since it is smaller than the sum of its proper divisors (99459187700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90393295540 is a wasteful number, since it uses less digits than its factorization.

90393295540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632451 (or 632449 counting only the distinct ones).

The product of its (nonzero) digits is 1312200, while the sum is 49.

The spelling of 90393295540 in words is "ninety billion, three hundred ninety-three million, two hundred ninety-five thousand, five hundred forty".