12920479 has 8 divisors (see below), whose sum is σ = 15179472. Its totient is φ = 10842240.

The previous prime is 12920461. The next prime is 12920483. The reversal of 12920479 is 97402921.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12920479 - 2⁹ = 12919967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12920419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45034 + ... + 45319.

It is an arithmetic number, because the mean of its divisors is an integer number (1897434).

Almost surely, 2^12920479 is an apocalyptic number.

12920479 is a deficient number, since it is larger than the sum of its proper divisors (2258993).

12920479 is a wasteful number, since it uses less digits than its factorization.

12920479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90377.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 12920479 is about 3594.5067811871. The cubic root of 12920479 is about 234.6530507212.

The spelling of 12920479 in words is "twelve million, nine hundred twenty thousand, four hundred seventy-nine".