13920972841 has 4 divisors (see below), whose sum is σ = 13922346384. Its totient is φ = 13919599300.

The previous prime is 13920972799. The next prime is 13920972851. The reversal of 13920972841 is 14827902931.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 13920972841 - 2¹³ = 13920964649 is a prime.

It is a super-2 number, since 2×13920972841² (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 = 13920972791 and 13920972800.

It is not an unprimeable number, because it can be changed into a prime (13920972851) 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, 671455 + ... + 691876.

It is an arithmetic number, because the mean of its divisors is an integer number (3480586596).

Almost surely, 2^13920972841 is an apocalyptic number.

It is an amenable number.

13920972841 is a deficient number, since it is larger than the sum of its proper divisors (1373543).

13920972841 is a wasteful number, since it uses less digits than its factorization.

13920972841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373542.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 13920972841 in words is "thirteen billion, nine hundred twenty million, nine hundred seventy-two thousand, eight hundred forty-one".