74239669 has 16 divisors (see below), whose sum is σ = 89740800. Its totient is φ = 59994864.

The previous prime is 74239639. The next prime is 74239679. The reversal of 74239669 is 96693247.

It is a cyclic number.

It is not a de Polignac number, because 74239669 - 2⁷ = 74239541 is a prime.

It is a super-2 number, since 2×74239669² = 11023056906459122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74239639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28962 + ... + 31420.

It is an arithmetic number, because the mean of its divisors is an integer number (5608800).

Almost surely, 2^74239669 is an apocalyptic number.

It is an amenable number.

74239669 is a deficient number, since it is larger than the sum of its proper divisors (15501131).

74239669 is a wasteful number, since it uses less digits than its factorization.

74239669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712.

The product of its digits is 489888, while the sum is 46.

The square root of 74239669 is about 8616.2444835323. The cubic root of 74239669 is about 420.2864051801.

The spelling of 74239669 in words is "seventy-four million, two hundred thirty-nine thousand, six hundred sixty-nine".