8479540 has 12 divisors (see below), whose sum is σ = 17807076. Its totient is φ = 3391808.

The previous prime is 8479531. The next prime is 8479547. The reversal of 8479540 is 459748.

It can be written as a sum of positive squares in 2 ways, for example, as 4169764 + 4309776 = 2042^2 + 2076^2 .

It is a super-2 number, since 2×8479540² = 143805197223200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8479540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8479547) 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, 211969 + ... + 212008.

It is an arithmetic number, because the mean of its divisors is an integer number (1483923).

Almost surely, 2^8479540 is an apocalyptic number.

It is an amenable number.

8479540 is an abundant number, since it is smaller than the sum of its proper divisors (9327536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8479540 is a wasteful number, since it uses less digits than its factorization.

8479540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423986 (or 423984 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 8479540 is about 2911.9649723168. The cubic root of 8479540 is about 203.9188771387.

The spelling of 8479540 in words is "eight million, four hundred seventy-nine thousand, five hundred forty".