540649590 has 48 divisors (see below), whose sum is σ = 1405062288. Its totient is φ = 133081728.

The previous prime is 540649573. The next prime is 540649609. The reversal of 540649590 is 95946045.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48249 + ... + 58388.

It is an arithmetic number, because the mean of its divisors is an integer number (29272131).

Almost surely, 2^540649590 is an apocalyptic number.

540649590 is an abundant number, since it is smaller than the sum of its proper divisors (864412698).

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

540649590 is a wasteful number, since it uses less digits than its factorization.

540649590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106673 (or 106660 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 540649590 is about 23251.8728277960. The cubic root of 540649590 is about 814.6516834929.

The spelling of 540649590 in words is "five hundred forty million, six hundred forty-nine thousand, five hundred ninety".