13779772 has 24 divisors (see below), whose sum is σ = 25062912. Its totient is φ = 6624000.

The previous prime is 13779767. The next prime is 13779791. The reversal of 13779772 is 27797731.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11397 + ... + 12547.

It is an arithmetic number, because the mean of its divisors is an integer number (1044288).

Almost surely, 2^13779772 is an apocalyptic number.

It is an amenable number.

13779772 is a deficient number, since it is larger than the sum of its proper divisors (11283140).

13779772 is a wasteful number, since it uses less digits than its factorization.

13779772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269 (or 1267 counting only the distinct ones).

The product of its digits is 129654, while the sum is 43.

The square root of 13779772 is about 3712.1115284970. Note that the first 3 decimals coincide. The cubic root of 13779772 is about 239.7437774817.

It can be divided in two parts, 1 and 3779772, that added together give a palindrome (3779773).

The spelling of 13779772 in words is "thirteen million, seven hundred seventy-nine thousand, seven hundred seventy-two".