13920837 has 8 divisors (see below), whose sum is σ = 21212736. Its totient is φ = 7954752.

The previous prime is 13920833. The next prime is 13920859. The reversal of 13920837 is 73802931.

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

It is not a de Polignac number, because 13920837 - 2² = 13920833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13920798 and 13920807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13920833) 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 7 ways as a sum of consecutive naturals, for example, 331428 + ... + 331469.

It is an arithmetic number, because the mean of its divisors is an integer number (2651592).

Almost surely, 2^13920837 is an apocalyptic number.

It is an amenable number.

13920837 is a deficient number, since it is larger than the sum of its proper divisors (7291899).

13920837 is an equidigital number, since it uses as much as digits as its factorization.

13920837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662907.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 13920837 is about 3731.0637893234. The cubic root of 13920837 is about 240.5590958435.

The spelling of 13920837 in words is "thirteen million, nine hundred twenty thousand, eight hundred thirty-seven".