12045398 has 4 divisors (see below), whose sum is σ = 18068100. Its totient is φ = 6022698.

The previous prime is 12045347. The next prime is 12045409. The reversal of 12045398 is 89354021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89354021 = 1607 ⋅55603.

It is a super-2 number, since 2×12045398² = 290183225956808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3011348 + ... + 3011351.

It is an arithmetic number, because the mean of its divisors is an integer number (4517025).

Almost surely, 2^12045398 is an apocalyptic number.

12045398 is a deficient number, since it is larger than the sum of its proper divisors (6022702).

12045398 is an equidigital number, since it uses as much as digits as its factorization.

12045398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6022701.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 12045398 is about 3470.6480662839. The cubic root of 12045398 is about 229.2311948461.

The spelling of 12045398 in words is "twelve million, forty-five thousand, three hundred ninety-eight".