540689401 has 8 divisors (see below), whose sum is σ = 618291584. Its totient is φ = 463177440.

The previous prime is 540689389. The next prime is 540689423. The reversal of 540689401 is 104986045.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 540689401 - 2¹⁹ = 540165113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540689431) 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, 9180 + ... + 34141.

It is an arithmetic number, because the mean of its divisors is an integer number (77286448).

Almost surely, 2^540689401 is an apocalyptic number.

It is an amenable number.

540689401 is a deficient number, since it is larger than the sum of its proper divisors (77602183).

540689401 is a wasteful number, since it uses less digits than its factorization.

540689401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45111.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 540689401 is about 23252.7288936159. The cubic root of 540689401 is about 814.6716787620.

The spelling of 540689401 in words is "five hundred forty million, six hundred eighty-nine thousand, four hundred one".