13823926949 has 16 divisors (see below), whose sum is σ = 15961540608. Its totient is φ = 11727141552.

The previous prime is 13823926931. The next prime is 13823926979. The reversal of 13823926949 is 94962932831.

It is a happy number.

It is not a de Polignac number, because 13823926949 - 2¹⁶ = 13823861413 is a prime.

It is a super-2 number, since 2×13823926949² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13823926894 and 13823926903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13823926979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1500134 + ... + 1509320.

It is an arithmetic number, because the mean of its divisors is an integer number (997596288).

Almost surely, 2^13823926949 is an apocalyptic number.

It is an amenable number.

13823926949 is a deficient number, since it is larger than the sum of its proper divisors (2137613659).

13823926949 is a wasteful number, since it uses less digits than its factorization.

13823926949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11384.

The product of its digits is 5038848, while the sum is 56.

The spelling of 13823926949 in words is "thirteen billion, eight hundred twenty-three million, nine hundred twenty-six thousand, nine hundred forty-nine".