38940739 has 2 divisors, whose sum is σ = 38940740. Its totient is φ = 38940738.

The previous prime is 38940701. The next prime is 38940773. The reversal of 38940739 is 93704983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38940739 - 2⁹ = 38940227 is a prime.

It is a super-2 number, since 2×38940739² = 3032762307732242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38940695 and 38940704.

It is not a weakly prime, because it can be changed into another prime (38940799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19470369 + 19470370.

It is an arithmetic number, because the mean of its divisors is an integer number (19470370).

Almost surely, 2^38940739 is an apocalyptic number.

38940739 is a deficient number, since it is larger than the sum of its proper divisors (1).

38940739 is an equidigital number, since it uses as much as digits as its factorization.

38940739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 38940739 is about 6240.2515173669. The cubic root of 38940739 is about 338.9492909187.

The spelling of 38940739 in words is "thirty-eight million, nine hundred forty thousand, seven hundred thirty-nine".