5409999 has 24 divisors (see below), whose sum is σ = 9052160. Its totient is φ = 3049488.

The previous prime is 5409977. The next prime is 5410007. The reversal of 5409999 is 9999045.

It is a happy number.

5409999 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5409999 - 2⁵ = 5409967 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

5409999 is a modest number, since divided by 9999 gives 540 as remainder.

5409999 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5409199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4434 + ... + 5520.

Almost surely, 2^5409999 is an apocalyptic number.

5409999 is a deficient number, since it is larger than the sum of its proper divisors (3642161).

5409999 is a wasteful number, since it uses less digits than its factorization.

5409999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 5409999 is about 2325.9404549558. The cubic root of 5409999 is about 175.5492836484.

The spelling of 5409999 in words is "five million, four hundred nine thousand, nine hundred ninety-nine".