4626421 has 2 divisors, whose sum is σ = 4626422. Its totient is φ = 4626420.

The previous prime is 4626407. The next prime is 4626437. The reversal of 4626421 is 1246264.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4120900 + 505521 = 2030^2 + 711^2 .

It is a cyclic number.

It is not a de Polignac number, because 4626421 - 2⁵ = 4626389 is a prime.

It is equal to p₃₂₄₁₇₈ and since 4626421 and 324178 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4626121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2313210 + 2313211.

It is an arithmetic number, because the mean of its divisors is an integer number (2313211).

Almost surely, 2^4626421 is an apocalyptic number.

It is an amenable number.

4626421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4626421 is an equidigital number, since it uses as much as digits as its factorization.

4626421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 25.

The square root of 4626421 is about 2150.9116671774. The cubic root of 4626421 is about 166.6281542125.

The spelling of 4626421 in words is "four million, six hundred twenty-six thousand, four hundred twenty-one".