13374921 has 32 divisors (see below), whose sum is σ = 21212928. Its totient is φ = 7338240.

The previous prime is 13374913. The next prime is 13374923. The reversal of 13374921 is 12947331.

It is not a de Polignac number, because 13374921 - 2³ = 13374913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13374923) 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 31 ways as a sum of consecutive naturals, for example, 67795 + ... + 67991.

It is an arithmetic number, because the mean of its divisors is an integer number (662904).

Almost surely, 2^13374921 is an apocalyptic number.

It is an amenable number.

13374921 is a deficient number, since it is larger than the sum of its proper divisors (7838007).

13374921 is a wasteful number, since it uses less digits than its factorization.

13374921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its digits is 4536, while the sum is 30.

The square root of 13374921 is about 3657.1739089084. The cubic root of 13374921 is about 237.3725025741.

The spelling of 13374921 in words is "thirteen million, three hundred seventy-four thousand, nine hundred twenty-one".