13722437 has 4 divisors (see below), whose sum is σ = 13739820. Its totient is φ = 13705056.

The previous prime is 13722431. The next prime is 13722469. The reversal of 13722437 is 73422731.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11062276 + 2660161 = 3326^2 + 1631^2 .

It is a cyclic number.

It is not a de Polignac number, because 13722437 - 2¹⁶ = 13656901 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 (13722431) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7448 + ... + 9105.

It is an arithmetic number, because the mean of its divisors is an integer number (3434955).

Almost surely, 2^13722437 is an apocalyptic number.

It is an amenable number.

13722437 is a deficient number, since it is larger than the sum of its proper divisors (17383).

13722437 is an equidigital number, since it uses as much as digits as its factorization.

13722437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17382.

The product of its digits is 7056, while the sum is 29.

The square root of 13722437 is about 3704.3807849626. The cubic root of 13722437 is about 239.4108058840.

The spelling of 13722437 in words is "thirteen million, seven hundred twenty-two thousand, four hundred thirty-seven".