4646626421 has 4 divisors (see below), whose sum is σ = 4646858700. Its totient is φ = 4646394144.

The previous prime is 4646626393. The next prime is 4646626447. The reversal of 4646626421 is 1246266464.

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 419676196 + 4226950225 = 20486^2 + 65015^2 .

It is a cyclic number.

It is not a de Polignac number, because 4646626421 - 2⁶ = 4646626357 is a prime.

It is a super-2 number, since 2×4646626421² = 43182274192670538482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4646626021) 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, 82976 + ... + 127193.

It is an arithmetic number, because the mean of its divisors is an integer number (1161714675).

Almost surely, 2^4646626421 is an apocalyptic number.

It is an amenable number.

4646626421 is a deficient number, since it is larger than the sum of its proper divisors (232279).

4646626421 is a wasteful number, since it uses less digits than its factorization.

4646626421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232278.

The product of its digits is 331776, while the sum is 41.

The square root of 4646626421 is about 68166.1677153704. The cubic root of 4646626421 is about 1668.7037906921.

The spelling of 4646626421 in words is "four billion, six hundred forty-six million, six hundred twenty-six thousand, four hundred twenty-one".