38838739 has 2 divisors, whose sum is σ = 38838740. Its totient is φ = 38838738.

The previous prime is 38838733. The next prime is 38838781. The reversal of 38838739 is 93783883.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38838739 - 2⁵ = 38838707 is a prime.

It is a super-2 number, since 2×38838739² = 3016895294220242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38838692 and 38838701.

It is not a weakly prime, because it can be changed into another prime (38838733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19419369 + 19419370.

It is an arithmetic number, because the mean of its divisors is an integer number (19419370).

Almost surely, 2^38838739 is an apocalyptic number.

38838739 is a deficient number, since it is larger than the sum of its proper divisors (1).

38838739 is an equidigital number, since it uses as much as digits as its factorization.

38838739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 49.

The square root of 38838739 is about 6232.0734109925. The cubic root of 38838739 is about 338.6530882027.

The spelling of 38838739 in words is "thirty-eight million, eight hundred thirty-eight thousand, seven hundred thirty-nine".