4346721 has 12 divisors (see below), whose sum is σ = 6319248. Its totient is φ = 2879064.

The previous prime is 4346717. The next prime is 4346729. The reversal of 4346721 is 1276434.

It is not a de Polignac number, because 4346721 - 2² = 4346717 is a prime.

4346721 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4346729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15 + ... + 2948.

It is an arithmetic number, because the mean of its divisors is an integer number (526604).

Almost surely, 2^4346721 is an apocalyptic number.

It is an amenable number.

4346721 is a deficient number, since it is larger than the sum of its proper divisors (1972527).

4346721 is a wasteful number, since it uses less digits than its factorization.

4346721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132 (or 3129 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 4346721 is about 2084.8791331873. The cubic root of 4346721 is about 163.2001630982.

It can be divided in two parts, 43 and 46721, that added together give a palindrome (46764).

The spelling of 4346721 in words is "four million, three hundred forty-six thousand, seven hundred twenty-one".