12390464 has 14 divisors (see below), whose sum is σ = 24587454. Its totient is φ = 6195200.

The previous prime is 12390463. The next prime is 12390517. The reversal of 12390464 is 46409321.

It can be written as a sum of positive squares in only one way, i.e., 12390400 + 64 = 3520^2 + 8^2 .

It is not an unprimeable number, because it can be changed into a prime (12390461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96737 + ... + 96864.

Almost surely, 2^12390464 is an apocalyptic number.

It is an amenable number.

12390464 is a deficient number, since it is larger than the sum of its proper divisors (12196990).

12390464 is an equidigital number, since it uses as much as digits as its factorization.

12390464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193613 (or 193603 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 12390464 is about 3520.0090908974. The cubic root of 12390464 is about 231.3995571148.

Adding to 12390464 its reverse (46409321), we get a palindrome (58799785).

It can be divided in two parts, 123904 and 64, that multiplied together give a square (7929856 = 2816²).

The spelling of 12390464 in words is "twelve million, three hundred ninety thousand, four hundred sixty-four".