3479721 has 8 divisors (see below), whose sum is σ = 5302464. Its totient is φ = 1988400.

The previous prime is 3479699. The next prime is 3479731. The reversal of 3479721 is 1279743.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3479721 - 2⁹ = 3479209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3479731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82830 + ... + 82871.

It is an arithmetic number, because the mean of its divisors is an integer number (662808).

Almost surely, 2^3479721 is an apocalyptic number.

It is an amenable number.

3479721 is a deficient number, since it is larger than the sum of its proper divisors (1822743).

3479721 is a wasteful number, since it uses less digits than its factorization.

3479721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165711.

The product of its digits is 10584, while the sum is 33.

The square root of 3479721 is about 1865.4010292696. The cubic root of 3479721 is about 151.5356471575.

The spelling of 3479721 in words is "three million, four hundred seventy-nine thousand, seven hundred twenty-one".