4279640 has 32 divisors (see below), whose sum is σ = 9737280. Its totient is φ = 1692672.

The previous prime is 4279637. The next prime is 4279651. The reversal of 4279640 is 469724.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 4⁸ + 2¹¹ + 7⁵ + 9³ + 6³ + 4¹¹ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 4279597 and 4279606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3329 + ... + 4431.

It is an arithmetic number, because the mean of its divisors is an integer number (304290).

Almost surely, 2^4279640 is an apocalyptic number.

4279640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4279640 is an abundant number, since it is smaller than the sum of its proper divisors (5457640).

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

4279640 is a wasteful number, since it uses less digits than its factorization.

4279640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211 (or 1207 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 4279640 is about 2068.7290784441. The cubic root of 4279640 is about 162.3562752856.

The spelling of 4279640 in words is "four million, two hundred seventy-nine thousand, six hundred forty".