13491992 has 16 divisors (see below), whose sum is σ = 25337040. Its totient is φ = 6735456.

The previous prime is 13491983. The next prime is 13491997. The reversal of 13491992 is 29919431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13491997) 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, 7973 + ... + 9515.

It is an arithmetic number, because the mean of its divisors is an integer number (1583565).

Almost surely, 2^13491992 is an apocalyptic number.

It is an amenable number.

13491992 is a deficient number, since it is larger than the sum of its proper divisors (11845048).

13491992 is a wasteful number, since it uses less digits than its factorization.

13491992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642 (or 2638 counting only the distinct ones).

The product of its digits is 17496, while the sum is 38.

The square root of 13491992 is about 3673.1447017508. The cubic root of 13491992 is about 238.0630673435.

The spelling of 13491992 in words is "thirteen million, four hundred ninety-one thousand, nine hundred ninety-two".