74599139 has 2 divisors, whose sum is σ = 74599140. Its totient is φ = 74599138.

The previous prime is 74599121. The next prime is 74599153. The reversal of 74599139 is 93199547.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74599139 - 2²⁴ = 57821923 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 74599093 and 74599102.

It is not a weakly prime, because it can be changed into another prime (74599169) 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, 37299569 + 37299570.

It is an arithmetic number, because the mean of its divisors is an integer number (37299570).

Almost surely, 2^74599139 is an apocalyptic number.

74599139 is a deficient number, since it is larger than the sum of its proper divisors (1).

74599139 is an equidigital number, since it uses as much as digits as its factorization.

74599139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 47.

The square root of 74599139 is about 8637.0793095815. The cubic root of 74599139 is about 420.9636583935.

The spelling of 74599139 in words is "seventy-four million, five hundred ninety-nine thousand, one hundred thirty-nine".