12940973 has 4 divisors (see below), whose sum is σ = 13503648. Its totient is φ = 12378300.

The previous prime is 12940969. The next prime is 12940987. The reversal of 12940973 is 37904921.

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 12940973 - 2² = 12940969 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 (12940903) 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, 281303 + ... + 281348.

It is an arithmetic number, because the mean of its divisors is an integer number (3375912).

Almost surely, 2^12940973 is an apocalyptic number.

It is an amenable number.

12940973 is a deficient number, since it is larger than the sum of its proper divisors (562675).

12940973 is an equidigital number, since it uses as much as digits as its factorization.

12940973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562674.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 12940973 is about 3597.3563904623. The cubic root of 12940973 is about 234.7770512645. Note that the first 3 decimals are identical.

It can be divided in two parts, 1294097 and 3, that multiplied together give a triangular number (3882291 = T₂₇₈₆).

The spelling of 12940973 in words is "twelve million, nine hundred forty thousand, nine hundred seventy-three".