244660421 has 2 divisors, whose sum is σ = 244660422. Its totient is φ = 244660420.

The previous prime is 244660387. The next prime is 244660439. The reversal of 244660421 is 124066442.

It is a happy number.

244660421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214300321 + 30360100 = 14639^2 + 5510^2 .

It is a cyclic number.

It is not a de Polignac number, because 244660421 - 2²⁶ = 177551557 is a prime.

It is a Chen prime.

It is equal to p_13402847 and since 244660421 and 13402847 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 (244660121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122330210 + 122330211.

It is an arithmetic number, because the mean of its divisors is an integer number (122330211).

Almost surely, 2^244660421 is an apocalyptic number.

It is an amenable number.

244660421 is a deficient number, since it is larger than the sum of its proper divisors (1).

244660421 is an equidigital number, since it uses as much as digits as its factorization.

244660421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 244660421 is about 15641.6246278959. The cubic root of 244660421 is about 625.4432448335.

The spelling of 244660421 in words is "two hundred forty-four million, six hundred sixty thousand, four hundred twenty-one".