12049391 has 8 divisors (see below), whose sum is σ = 12481344. Its totient is φ = 11625120.

The previous prime is 12049361. The next prime is 12049399. The reversal of 12049391 is 19394021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12049391 - 2⁶ = 12049327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12049399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1370 + ... + 5096.

It is an arithmetic number, because the mean of its divisors is an integer number (1560168).

Almost surely, 2^12049391 is an apocalyptic number.

12049391 is a deficient number, since it is larger than the sum of its proper divisors (431953).

12049391 is an equidigital number, since it uses as much as digits as its factorization.

12049391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 12049391 is about 3471.2232714131. The cubic root of 12049391 is about 229.2565217811.

The spelling of 12049391 in words is "twelve million, forty-nine thousand, three hundred ninety-one".