13539802 has 4 divisors (see below), whose sum is σ = 20309706. Its totient is φ = 6769900.

The previous prime is 13539791. The next prime is 13539811. The reversal of 13539802 is 20893531.

It is a happy number.

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., 13535041 + 4761 = 3679^2 + 69^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3384949 + ... + 3384952.

Almost surely, 2^13539802 is an apocalyptic number.

13539802 is a deficient number, since it is larger than the sum of its proper divisors (6769904).

13539802 is an equidigital number, since it uses as much as digits as its factorization.

13539802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6769903.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 13539802 is about 3679.6469939384. The cubic root of 13539802 is about 238.3439346299.

It can be divided in two parts, 13539 and 802, that added together give a palindrome (14341).

The spelling of 13539802 in words is "thirteen million, five hundred thirty-nine thousand, eight hundred two".