540007994 has 4 divisors (see below), whose sum is σ = 810011994. Its totient is φ = 270003996.

The previous prime is 540007991. The next prime is 540008011. The reversal of 540007994 is 499700045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 535320769 + 4687225 = 23137^2 + 2165^2 .

It is not an unprimeable number, because it can be changed into a prime (540007991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135001997 + ... + 135002000.

Almost surely, 2^540007994 is an apocalyptic number.

540007994 is a deficient number, since it is larger than the sum of its proper divisors (270004000).

540007994 is a wasteful number, since it uses less digits than its factorization.

540007994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270003999.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 540007994 is about 23238.0720801017. The cubic root of 540007994 is about 814.3293033021.

The spelling of 540007994 in words is "five hundred forty million, seven thousand, nine hundred ninety-four".