4270657921 has 4 divisors (see below), whose sum is σ = 4334399152. Its totient is φ = 4206916692.

The previous prime is 4270657901. The next prime is 4270657927. The reversal of 4270657921 is 1297560724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4270657921 - 2⁷ = 4270657793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4270657927) 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, 31870515 + ... + 31870648.

It is an arithmetic number, because the mean of its divisors is an integer number (1083599788).

Almost surely, 2^4270657921 is an apocalyptic number.

It is an amenable number.

4270657921 is a deficient number, since it is larger than the sum of its proper divisors (63741231).

4270657921 is an equidigital number, since it uses as much as digits as its factorization.

4270657921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63741230.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 4270657921 is about 65350.2710093845. The cubic root of 4270657921 is about 1622.4261165166.

The spelling of 4270657921 in words is "four billion, two hundred seventy million, six hundred fifty-seven thousand, nine hundred twenty-one".