540821699 has 8 divisors (see below), whose sum is σ = 601119792. Its totient is φ = 482379040.

The previous prime is 540821683. The next prime is 540821713. The reversal of 540821699 is 996128045.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 540821699 - 2⁴ = 540821683 is a prime.

It is a super-2 number, since 2×540821699² = 584976220218493202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540821299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463244 + ... + 464409.

It is an arithmetic number, because the mean of its divisors is an integer number (75139974).

Almost surely, 2^540821699 is an apocalyptic number.

540821699 is a deficient number, since it is larger than the sum of its proper divisors (60298093).

540821699 is a wasteful number, since it uses less digits than its factorization.

540821699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927717.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 540821699 is about 23255.5735040011. The cubic root of 540821699 is about 814.7381190289.

The spelling of 540821699 in words is "five hundred forty million, eight hundred twenty-one thousand, six hundred ninety-nine".