4540394 has 8 divisors (see below), whose sum is σ = 7211268. Its totient is φ = 2136640.

The previous prime is 4540369. The next prime is 4540397. The reversal of 4540394 is 4930454.

It can be written as a sum of positive squares in 2 ways, for example, as 4464769 + 75625 = 2113^2 + 275^2 .

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

It is not an unprimeable number, because it can be changed into a prime (4540397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66737 + ... + 66804.

Almost surely, 2^4540394 is an apocalyptic number.

4540394 is a deficient number, since it is larger than the sum of its proper divisors (2670874).

4540394 is a wasteful number, since it uses less digits than its factorization.

4540394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133560.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 4540394 is about 2130.8200299415. The cubic root of 4540394 is about 165.5888844477.

The spelling of 4540394 in words is "four million, five hundred forty thousand, three hundred ninety-four".