4920040449 has 27 divisors (see below), whose sum is σ = 7208145633. Its totient is φ = 3233872872.

The previous prime is 4920040421. The next prime is 4920040451. The reversal of 4920040449 is 9440400294.

It is a happy number.

The square root of 4920040449 is 70143.

It is a perfect power (a square), and thus also a powerful number.

4920040449 is a `hidden beast` number, since 4 + 9 + 200 + 4 + 0 + 449 = 666.

It is not a de Polignac number, because 4920040449 - 2¹⁷ = 4919909377 is a prime.

It is a super-2 number, since 2×4920040449² = 48413596039592243202, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (4920044449) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 21674074 + ... + 21674300.

Almost surely, 2^4920040449 is an apocalyptic number.

4920040449 is the 70143-rd square number.

4920040449 is the 35072-nd centered octagonal number.

It is an amenable number.

4920040449 is a deficient number, since it is larger than the sum of its proper divisors (2288105184).

4920040449 is an equidigital number, since it uses as much as digits as its factorization.

4920040449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The cubic root of 4920040449 is about 1700.8116595882.

Multiplying 4920040449 by its sum of digits (36), we get a square (177121456164 = 420858²).

The spelling of 4920040449 in words is "four billion, nine hundred twenty million, forty thousand, four hundred forty-nine".