4294721 has 4 divisors (see below), whose sum is σ = 4481472. Its totient is φ = 4107972.

The previous prime is 4294699. The next prime is 4294723. The reversal of 4294721 is 1274924.

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 4294721 - 2⁶ = 4294657 is a prime.

It is a d-powerful number, because it can be written as 4³ + 2¹³ + 9⁵ + 4¹¹ + 7³ + 2¹⁵ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4294723) 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, 93341 + ... + 93386.

It is an arithmetic number, because the mean of its divisors is an integer number (1120368).

Almost surely, 2^4294721 is an apocalyptic number.

It is an amenable number.

4294721 is a deficient number, since it is larger than the sum of its proper divisors (186751).

4294721 is a wasteful number, since it uses less digits than its factorization.

4294721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186750.

The product of its digits is 4032, while the sum is 29.

The square root of 4294721 is about 2072.3708644931. The cubic root of 4294721 is about 162.5467605075.

The spelling of 4294721 in words is "four million, two hundred ninety-four thousand, seven hundred twenty-one".