4457929657 has 4 divisors (see below), whose sum is σ = 4458066660. Its totient is φ = 4457792656.

The previous prime is 4457929643. The next prime is 4457929687. The reversal of 4457929657 is 7569297544.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4272452496 + 185477161 = 65364^2 + 13619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4457929657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4457929687) 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, 11283 + ... + 95095.

It is an arithmetic number, because the mean of its divisors is an integer number (1114516665).

Almost surely, 2^4457929657 is an apocalyptic number.

It is an amenable number.

4457929657 is a deficient number, since it is larger than the sum of its proper divisors (137003).

4457929657 is an equidigital number, since it uses as much as digits as its factorization.

4457929657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137002.

The product of its digits is 19051200, while the sum is 58.

The square root of 4457929657 is about 66767.7291586287. The cubic root of 4457929657 is about 1645.8025736063.

The spelling of 4457929657 in words is "four billion, four hundred fifty-seven million, nine hundred twenty-nine thousand, six hundred fifty-seven".