38398693 has 2 divisors, whose sum is σ = 38398694. Its totient is φ = 38398692.

The previous prime is 38398687. The next prime is 38398721. The reversal of 38398693 is 39689383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32012964 + 6385729 = 5658^2 + 2527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38398693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38398993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19199346 + 19199347.

It is an arithmetic number, because the mean of its divisors is an integer number (19199347).

Almost surely, 2^38398693 is an apocalyptic number.

It is an amenable number.

38398693 is a deficient number, since it is larger than the sum of its proper divisors (1).

38398693 is an equidigital number, since it uses as much as digits as its factorization.

38398693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 49.

The square root of 38398693 is about 6196.6678949255. The cubic root of 38398693 is about 337.3692384158.

The spelling of 38398693 in words is "thirty-eight million, three hundred ninety-eight thousand, six hundred ninety-three".