540392890 has 16 divisors (see below), whose sum is σ = 972985608. Its totient is φ = 216095296.

The previous prime is 540392869. The next prime is 540392891. The reversal of 540392890 is 98293045.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 538193601 + 2199289 = 23199^2 + 1483^2 .

It is not an unprimeable number, because it can be changed into a prime (540392891) 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, 48264 + ... + 58396.

Almost surely, 2^540392890 is an apocalyptic number.

540392890 is a deficient number, since it is larger than the sum of its proper divisors (432592718).

540392890 is a wasteful number, since it uses less digits than its factorization.

540392890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15473.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 540392890 is about 23246.3521869561. The cubic root of 540392890 is about 814.5227310891.

The spelling of 540392890 in words is "five hundred forty million, three hundred ninety-two thousand, eight hundred ninety".