4394457 has 24 divisors (see below), whose sum is σ = 6669000. Its totient is φ = 2784768.

The previous prime is 4394447. The next prime is 4394461. The reversal of 4394457 is 7544934.

It can be written as a sum of positive squares in 4 ways, for example, as 84681 + 4309776 = 291^2 + 2076^2 .

It is not a de Polignac number, because 4394457 - 2⁴ = 4394441 is a prime.

It is a super-2 number, since 2×4394457² = 38622504649698, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (4394437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29419 + ... + 29567.

It is an arithmetic number, because the mean of its divisors is an integer number (277875).

Almost surely, 2^4394457 is an apocalyptic number.

It is an amenable number.

4394457 is a deficient number, since it is larger than the sum of its proper divisors (2274543).

4394457 is a wasteful number, since it uses less digits than its factorization.

4394457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 294 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 4394457 is about 2096.2960191729. The cubic root of 4394457 is about 163.7954146319.

It can be divided in two parts, 4394 and 457, that added together give a triangular number (4851 = T₉₈).

The spelling of 4394457 in words is "four million, three hundred ninety-four thousand, four hundred fifty-seven".