12013397 has 4 divisors (see below), whose sum is σ = 13105536. Its totient is φ = 10921260.

The previous prime is 12013381. The next prime is 12013411. The reversal of 12013397 is 79331021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12013397 - 2⁴ = 12013381 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 (12013307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546053 + ... + 546074.

It is an arithmetic number, because the mean of its divisors is an integer number (3276384).

Almost surely, 2^12013397 is an apocalyptic number.

It is an amenable number.

12013397 is a deficient number, since it is larger than the sum of its proper divisors (1092139).

12013397 is a wasteful number, since it uses less digits than its factorization.

12013397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092138.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 12013397 is about 3466.0347661268. The cubic root of 12013397 is about 229.0280153619.

The spelling of 12013397 in words is "twelve million, thirteen thousand, three hundred ninety-seven".