4639457 has 2 divisors, whose sum is σ = 4639458. Its totient is φ = 4639456.

The previous prime is 4639447. The next prime is 4639483. The reversal of 4639457 is 7549364.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2446096 + 2193361 = 1564^2 + 1481^2 .

It is a cyclic number.

It is not a de Polignac number, because 4639457 - 2¹² = 4635361 is a prime.

It is a super-2 number, since 2×4639457² = 43049122509698, 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 4639457.

It is not a weakly prime, because it can be changed into another prime (4639447) 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 as a sum of consecutive naturals, namely, 2319728 + 2319729.

It is an arithmetic number, because the mean of its divisors is an integer number (2319729).

Almost surely, 2^4639457 is an apocalyptic number.

It is an amenable number.

4639457 is a deficient number, since it is larger than the sum of its proper divisors (1).

4639457 is an equidigital number, since it uses as much as digits as its factorization.

4639457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 4639457 is about 2153.9398784553. The cubic root of 4639457 is about 166.7845117667.

The spelling of 4639457 in words is "four million, six hundred thirty-nine thousand, four hundred fifty-seven".