38494139 has 2 divisors, whose sum is σ = 38494140. Its totient is φ = 38494138.

The previous prime is 38494109. The next prime is 38494147. The reversal of 38494139 is 93149483.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38494139 - 2⁸ = 38493883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38494096 and 38494105.

It is not a weakly prime, because it can be changed into another prime (38494109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19247069 + 19247070.

It is an arithmetic number, because the mean of its divisors is an integer number (19247070).

Almost surely, 2^38494139 is an apocalyptic number.

38494139 is a deficient number, since it is larger than the sum of its proper divisors (1).

38494139 is an equidigital number, since it uses as much as digits as its factorization.

38494139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 38494139 is about 6204.3645121801. The cubic root of 38494139 is about 337.6485352595.

The spelling of 38494139 in words is "thirty-eight million, four hundred ninety-four thousand, one hundred thirty-nine".