2479857 has 8 divisors (see below), whose sum is σ = 3324384. Its totient is φ = 1644288.

The previous prime is 2479849. The next prime is 2479879. The reversal of 2479857 is 7589742.

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

It is not a de Polignac number, because 2479857 - 2³ = 2479849 is a prime.

It is a super-2 number, since 2×2479857² = 12299381480898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2479847) 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, 1563 + ... + 2720.

It is an arithmetic number, because the mean of its divisors is an integer number (415548).

2^2479857 is an apocalyptic number.

It is an amenable number.

2479857 is a deficient number, since it is larger than the sum of its proper divisors (844527).

2479857 is a wasteful number, since it uses less digits than its factorization.

2479857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4479.

The product of its digits is 141120, while the sum is 42.

The square root of 2479857 is about 1574.7561716024. The cubic root of 2479857 is about 135.3553873534.

The spelling of 2479857 in words is "two million, four hundred seventy-nine thousand, eight hundred fifty-seven".