5639400 has 144 divisors (see below), whose sum is σ = 20480460. Its totient is φ = 1382400.

The previous prime is 5639399. The next prime is 5639411. The reversal of 5639400 is 49365.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1695204 + 3944196 = 1302^2 + 1986^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23280 + ... + 23520.

Almost surely, 2^5639400 is an apocalyptic number.

5639400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5639400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10240230).

5639400 is an abundant number, since it is smaller than the sum of its proper divisors (14841060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5639400 is a wasteful number, since it uses less digits than its factorization.

5639400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 5639400 is about 2374.7420912596. The cubic root of 5639400 is about 177.9962966868.

The spelling of 5639400 in words is "five million, six hundred thirty-nine thousand, four hundred".