407494540 has 24 divisors (see below), whose sum is σ = 856598400. Its totient is φ = 162834048.

The previous prime is 407494537. The next prime is 407494547. The reversal of 407494540 is 45494704.

It is a happy number.

It is a super-4 number, since 4×407494540⁴ (a number of 36 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 407494540.

It is not an unprimeable number, because it can be changed into a prime (407494547) 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, 11269 + ... + 30691.

It is an arithmetic number, because the mean of its divisors is an integer number (35691600).

Almost surely, 2^407494540 is an apocalyptic number.

It is an amenable number.

407494540 is an abundant number, since it is smaller than the sum of its proper divisors (449103860).

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

407494540 is a wasteful number, since it uses less digits than its factorization.

407494540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20481 (or 20479 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 407494540 is about 20186.4939997019. The cubic root of 407494540 is about 741.3795424941.

The spelling of 407494540 in words is "four hundred seven million, four hundred ninety-four thousand, five hundred forty".