12354891 has 8 divisors (see below), whose sum is σ = 16658640. Its totient is φ = 8143872.

The previous prime is 12354871. The next prime is 12354893. The reversal of 12354891 is 19845321.

12354891 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12354891 - 2⁷ = 12354763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12354893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22870 + ... + 23403.

It is an arithmetic number, because the mean of its divisors is an integer number (2082330).

Almost surely, 2^12354891 is an apocalyptic number.

12354891 is a deficient number, since it is larger than the sum of its proper divisors (4303749).

12354891 is an equidigital number, since it uses as much as digits as its factorization.

12354891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46365.

The product of its digits is 8640, while the sum is 33.

The square root of 12354891 is about 3514.9524890103. The cubic root of 12354891 is about 231.1778956111.

It can be divided in two parts, 12 and 354891, that added together give a triangular number (354903 = T₈₄₂).

The spelling of 12354891 in words is "twelve million, three hundred fifty-four thousand, eight hundred ninety-one".