74148439 has 2 divisors, whose sum is σ = 74148440. Its totient is φ = 74148438.

The previous prime is 74148433. The next prime is 74148461. The reversal of 74148439 is 93484147.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74148439 - 2²³ = 65759831 is a prime.

It is a super-2 number, since 2×74148439² = 10995982012273442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74148433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37074219 + 37074220.

It is an arithmetic number, because the mean of its divisors is an integer number (37074220).

Almost surely, 2^74148439 is an apocalyptic number.

74148439 is a deficient number, since it is larger than the sum of its proper divisors (1).

74148439 is an equidigital number, since it uses as much as digits as its factorization.

74148439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 40.

The square root of 74148439 is about 8610.9487862837. The cubic root of 74148439 is about 420.1141771969.

The spelling of 74148439 in words is "seventy-four million, one hundred forty-eight thousand, four hundred thirty-nine".