4661446421 has 4 divisors (see below), whose sum is σ = 4688391372. Its totient is φ = 4634501472.

The previous prime is 4661446411. The next prime is 4661446441. The reversal of 4661446421 is 1246441664.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3044280625 + 1617165796 = 55175^2 + 40214^2 .

It is a cyclic number.

It is not a de Polignac number, because 4661446421 - 2⁶ = 4661446357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4661446411) 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, 13472216 + ... + 13472561.

It is an arithmetic number, because the mean of its divisors is an integer number (1172097843).

Almost surely, 2^4661446421 is an apocalyptic number.

It is an amenable number.

4661446421 is a deficient number, since it is larger than the sum of its proper divisors (26944951).

4661446421 is a wasteful number, since it uses less digits than its factorization.

4661446421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26944950.

The product of its digits is 110592, while the sum is 38.

The square root of 4661446421 is about 68274.7861292879. The cubic root of 4661446421 is about 1670.4759685296.

The spelling of 4661446421 in words is "four billion, six hundred sixty-one million, four hundred forty-six thousand, four hundred twenty-one".