5400644 has 12 divisors (see below), whose sum is σ = 9565584. Its totient is φ = 2667624.

The previous prime is 5400589. The next prime is 5400649. The reversal of 5400644 is 4460045.

It is a happy number.

It is a super-2 number, since 2×5400644² = 58333911229472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5400649) 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, 7802 + ... + 8465.

It is an arithmetic number, because the mean of its divisors is an integer number (797132).

Almost surely, 2^5400644 is an apocalyptic number.

It is an amenable number.

5400644 is a deficient number, since it is larger than the sum of its proper divisors (4164940).

5400644 is a wasteful number, since it uses less digits than its factorization.

5400644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16354 (or 16352 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 5400644 is about 2323.9285703309. The cubic root of 5400644 is about 175.4480383393.

Adding to 5400644 its reverse (4460045), we get a palindrome (9860689).

The spelling of 5400644 in words is "five million, four hundred thousand, six hundred forty-four".