13973091 has 8 divisors (see below), whose sum is σ = 20324544. Its totient is φ = 8468520.

The previous prime is 13973077. The next prime is 13973093. The reversal of 13973091 is 19037931.

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

It is not a de Polignac number, because 13973091 - 2⁵ = 13973059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 423427 = 13973091 / (1 + 3 + 9 + 7 + 3 + 0 + 9 + 1).

It is not an unprimeable number, because it can be changed into a prime (13973093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211681 + ... + 211746.

It is an arithmetic number, because the mean of its divisors is an integer number (2540568).

Almost surely, 2^13973091 is an apocalyptic number.

13973091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13973091 is a deficient number, since it is larger than the sum of its proper divisors (6351453).

13973091 is a wasteful number, since it uses less digits than its factorization.

13973091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423441.

The product of its (nonzero) digits is 5103, while the sum is 33.

The square root of 13973091 is about 3738.0597908541. The cubic root of 13973091 is about 240.8597118597.

The spelling of 13973091 in words is "thirteen million, nine hundred seventy-three thousand, ninety-one".