5400749 has 4 divisors (see below), whose sum is σ = 5407164. Its totient is φ = 5394336.

The previous prime is 5400743. The next prime is 5400761. The reversal of 5400749 is 9470045.

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 2449225 + 2951524 = 1565^2 + 1718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5400749 is a prime.

It is a super-2 number, since 2×5400749² = 58336179522002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5400743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1712 + ... + 3705.

It is an arithmetic number, because the mean of its divisors is an integer number (1351791).

Almost surely, 2^5400749 is an apocalyptic number.

It is an amenable number.

5400749 is a deficient number, since it is larger than the sum of its proper divisors (6415).

5400749 is an equidigital number, since it uses as much as digits as its factorization.

5400749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6414.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 5400749 is about 2323.9511612768. The cubic root of 5400749 is about 175.4491753596.

The spelling of 5400749 in words is "five million, four hundred thousand, seven hundred forty-nine".