7979457 has 8 divisors (see below), whose sum is σ = 10926976. Its totient is φ = 5175792.

The previous prime is 7979453. The next prime is 7979479. The reversal of 7979457 is 7549797.

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

It is not a de Polignac number, because 7979457 - 2² = 7979453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7979453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35833 + ... + 36054.

It is an arithmetic number, because the mean of its divisors is an integer number (1365872).

Almost surely, 2^7979457 is an apocalyptic number.

It is an amenable number.

7979457 is a deficient number, since it is larger than the sum of its proper divisors (2947519).

7979457 is a wasteful number, since it uses less digits than its factorization.

7979457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71927.

The product of its digits is 555660, while the sum is 48.

The square root of 7979457 is about 2824.7932667719. The cubic root of 7979457 is about 199.8286615910.

The spelling of 7979457 in words is "seven million, nine hundred seventy-nine thousand, four hundred fifty-seven".