74494139 has 2 divisors, whose sum is σ = 74494140. Its totient is φ = 74494138.

The previous prime is 74494129. The next prime is 74494163. The reversal of 74494139 is 93149447.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74494139 - 2¹⁶ = 74428603 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 74494096 and 74494105.

It is not a weakly prime, because it can be changed into another prime (74494109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37247069 + 37247070.

It is an arithmetic number, because the mean of its divisors is an integer number (37247070).

Almost surely, 2^74494139 is an apocalyptic number.

74494139 is a deficient number, since it is larger than the sum of its proper divisors (1).

74494139 is an equidigital number, since it uses as much as digits as its factorization.

74494139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 74494139 is about 8630.9987255242. The cubic root of 74494139 is about 420.7660603202.

The spelling of 74494139 in words is "seventy-four million, four hundred ninety-four thousand, one hundred thirty-nine".