13722049 has 4 divisors (see below), whose sum is σ = 14969520. Its totient is φ = 12474580.

The previous prime is 13722019. The next prime is 13722067. The reversal of 13722049 is 94022731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94022731 = 11 ⋅8547521.

It is a cyclic number.

It is not a de Polignac number, because 13722049 - 2⁹ = 13721537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13722019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623719 + ... + 623740.

It is an arithmetic number, because the mean of its divisors is an integer number (3742380).

Almost surely, 2^13722049 is an apocalyptic number.

It is an amenable number.

13722049 is a deficient number, since it is larger than the sum of its proper divisors (1247471).

13722049 is a wasteful number, since it uses less digits than its factorization.

13722049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247470.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 13722049 is about 3704.3284141663. The cubic root of 13722049 is about 239.4085494269.

The spelling of 13722049 in words is "thirteen million, seven hundred twenty-two thousand, forty-nine".