5409749 has 4 divisors (see below), whose sum is σ = 5444364. Its totient is φ = 5375136.

The previous prime is 5409721. The next prime is 5409751. The reversal of 5409749 is 9479045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9479045 = 5 ⋅1895809.

It can be written as a sum of positive squares in 2 ways, for example, as 2502724 + 2907025 = 1582^2 + 1705^2 .

It is a cyclic number.

It is not a de Polignac number, because 5409749 - 2⁸ = 5409493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5409799) 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, 17072 + ... + 17385.

It is an arithmetic number, because the mean of its divisors is an integer number (1361091).

Almost surely, 2^5409749 is an apocalyptic number.

It is an amenable number.

5409749 is a deficient number, since it is larger than the sum of its proper divisors (34615).

5409749 is a wasteful number, since it uses less digits than its factorization.

5409749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34614.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 5409749 is about 2325.8867126324. The cubic root of 5409749 is about 175.5465795199.

It can be divided in two parts, 54097 and 49, that multiplied together give a triangular number (2650753 = T₂₃₀₂).

The spelling of 5409749 in words is "five million, four hundred nine thousand, seven hundred forty-nine".