13740491 has 4 divisors (see below), whose sum is σ = 13752312. Its totient is φ = 13728672.

The previous prime is 13740487. The next prime is 13740523. The reversal of 13740491 is 19404731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19404731 = 53 ⋅366127.

It is a cyclic number.

It is not a de Polignac number, because 13740491 - 2² = 13740487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13740421) 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 3 ways as a sum of consecutive naturals, for example, 3950 + ... + 6563.

It is an arithmetic number, because the mean of its divisors is an integer number (3438078).

Almost surely, 2^13740491 is an apocalyptic number.

13740491 is a deficient number, since it is larger than the sum of its proper divisors (11821).

13740491 is a wasteful number, since it uses less digits than its factorization.

13740491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11820.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 13740491 is about 3706.8168284931. The cubic root of 13740491 is about 239.5157539218.

The spelling of 13740491 in words is "thirteen million, seven hundred forty thousand, four hundred ninety-one".