540391404 has 36 divisors (see below), whose sum is σ = 1466778264. Its totient is φ = 154397376.

The previous prime is 540391403. The next prime is 540391441. The reversal of 540391404 is 404193045.

It is not an unprimeable number, because it can be changed into a prime (540391403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 458929 + ... + 460104.

Almost surely, 2^540391404 is an apocalyptic number.

It is an amenable number.

540391404 is an abundant number, since it is smaller than the sum of its proper divisors (926386860).

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

540391404 is a wasteful number, since it uses less digits than its factorization.

540391404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919054 (or 919045 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 540391404 is about 23246.3202249302. The cubic root of 540391404 is about 814.5219844830.

The spelling of 540391404 in words is "five hundred forty million, three hundred ninety-one thousand, four hundred four".