38994047 has 2 divisors, whose sum is σ = 38994048. Its totient is φ = 38994046.

The previous prime is 38994019. The next prime is 38994071. The reversal of 38994047 is 74049983.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38994047 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 38993989 and 38994007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38994017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19497023 + 19497024.

It is an arithmetic number, because the mean of its divisors is an integer number (19497024).

Almost surely, 2^38994047 is an apocalyptic number.

38994047 is a deficient number, since it is larger than the sum of its proper divisors (1).

38994047 is an equidigital number, since it uses as much as digits as its factorization.

38994047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 38994047 is about 6244.5213587592. The cubic root of 38994047 is about 339.1038888237.

The spelling of 38994047 in words is "thirty-eight million, nine hundred ninety-four thousand, forty-seven".