4378457 has 4 divisors (see below), whose sum is σ = 4403940. Its totient is φ = 4352976.

The previous prime is 4378453. The next prime is 4378463. The reversal of 4378457 is 7548734.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3400336 + 978121 = 1844^2 + 989^2 .

It is a cyclic number.

It is not a de Polignac number, because 4378457 - 2² = 4378453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4378457.

It is not an unprimeable number, because it can be changed into a prime (4378453) 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, 12482 + ... + 12827.

It is an arithmetic number, because the mean of its divisors is an integer number (1100985).

Almost surely, 2^4378457 is an apocalyptic number.

It is an amenable number.

4378457 is a deficient number, since it is larger than the sum of its proper divisors (25483).

4378457 is a wasteful number, since it uses less digits than its factorization.

4378457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25482.

The product of its digits is 94080, while the sum is 38.

The square root of 4378457 is about 2092.4762842145. The cubic root of 4378457 is about 163.5963825536.

The spelling of 4378457 in words is "four million, three hundred seventy-eight thousand, four hundred fifty-seven".