5439866 has 4 divisors (see below), whose sum is σ = 8159802. Its totient is φ = 2719932.

The previous prime is 5439853. The next prime is 5439869. The reversal of 5439866 is 6689345.

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

It can be written as a sum of positive squares in only one way, i.e., 5424241 + 15625 = 2329^2 + 125^2 .

It is not an unprimeable number, because it can be changed into a prime (5439869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1359965 + ... + 1359968.

Almost surely, 2^5439866 is an apocalyptic number.

5439866 is a deficient number, since it is larger than the sum of its proper divisors (2719936).

5439866 is a wasteful number, since it uses less digits than its factorization.

5439866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719935.

The product of its digits is 155520, while the sum is 41.

The square root of 5439866 is about 2332.3520317482. The cubic root of 5439866 is about 175.8717428177.

It can be divided in two parts, 5439 and 866, that multiplied together give a palindrome (4710174).

The spelling of 5439866 in words is "five million, four hundred thirty-nine thousand, eight hundred sixty-six".