4293440 has 28 divisors (see below), whose sum is σ = 10224516. Its totient is φ = 1717248.

The previous prime is 4293437. The next prime is 4293451. The reversal of 4293440 is 443924.

It can be written as a sum of positive squares in 2 ways, for example, as 1577536 + 2715904 = 1256^2 + 1648^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6389 + ... + 7028.

Almost surely, 2^4293440 is an apocalyptic number.

4293440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4293440 is an abundant number, since it is smaller than the sum of its proper divisors (5931076).

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

4293440 is a wasteful number, since it uses less digits than its factorization.

4293440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13434 (or 13424 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 4293440 is about 2072.0617751409. The cubic root of 4293440 is about 162.5305977886.

The spelling of 4293440 in words is "four million, two hundred ninety-three thousand, four hundred forty".