13992445 has 8 divisors (see below), whose sum is σ = 17778744. Its totient is φ = 10535424.

The previous prime is 13992443. The next prime is 13992449. The reversal of 13992445 is 54429931.

It can be written as a sum of positive squares in 4 ways, for example, as 3617604 + 10374841 = 1902^2 + 3221^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13992445 - 2¹ = 13992443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13992443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82224 + ... + 82393.

It is an arithmetic number, because the mean of its divisors is an integer number (2222343).

Almost surely, 2^13992445 is an apocalyptic number.

It is an amenable number.

13992445 is a deficient number, since it is larger than the sum of its proper divisors (3786299).

13992445 is a wasteful number, since it uses less digits than its factorization.

13992445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164639.

The product of its digits is 38880, while the sum is 37.

The square root of 13992445 is about 3740.6476711928. The cubic root of 13992445 is about 240.9708647481.

It can be divided in two parts, 1399 and 2445, that added together give a square (3844 = 62²).

The spelling of 13992445 in words is "thirteen million, nine hundred ninety-two thousand, four hundred forty-five".