5402728409 has 4 divisors (see below), whose sum is σ = 5818322916. Its totient is φ = 4987133904.

The previous prime is 5402728403. The next prime is 5402728417. The reversal of 5402728409 is 9048272045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2872638409 + 2530090000 = 53597^2 + 50300^2 .

It is a cyclic number.

It is not a de Polignac number, because 5402728409 - 2⁸ = 5402728153 is a prime.

It is a super-2 number, since 2×5402728409² = 58378948522831342562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5402728403) 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, 207797234 + ... + 207797259.

It is an arithmetic number, because the mean of its divisors is an integer number (1454580729).

Almost surely, 2^5402728409 is an apocalyptic number.

It is an amenable number.

5402728409 is a deficient number, since it is larger than the sum of its proper divisors (415594507).

5402728409 is a wasteful number, since it uses less digits than its factorization.

5402728409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415594506.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 5402728409 is about 73503.2544109443. The cubic root of 5402728409 is about 1754.7060715591.

The spelling of 5402728409 in words is "five billion, four hundred two million, seven hundred twenty-eight thousand, four hundred nine".