38344421 has 2 divisors, whose sum is σ = 38344422. Its totient is φ = 38344420.

The previous prime is 38344399. The next prime is 38344459. The reversal of 38344421 is 12444383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35832196 + 2512225 = 5986^2 + 1585^2 .

It is a cyclic number.

It is not a de Polignac number, because 38344421 - 2²² = 34150117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38344121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19172210 + 19172211.

It is an arithmetic number, because the mean of its divisors is an integer number (19172211).

Almost surely, 2^38344421 is an apocalyptic number.

It is an amenable number.

38344421 is a deficient number, since it is larger than the sum of its proper divisors (1).

38344421 is an equidigital number, since it uses as much as digits as its factorization.

38344421 is an evil number, because the sum of its binary digits is even.

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

The square root of 38344421 is about 6192.2872187908. The cubic root of 38344421 is about 337.2102196676.

The spelling of 38344421 in words is "thirty-eight million, three hundred forty-four thousand, four hundred twenty-one".