74999969 has 4 divisors (see below), whose sum is σ = 81818160. Its totient is φ = 68181780.

The previous prime is 74999959. The next prime is 75000007. The reversal of 74999969 is 96999947.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74999969 is a prime.

It is a super-2 number, since 2×74999969² = 11249990700001922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74999959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3409079 + ... + 3409100.

It is an arithmetic number, because the mean of its divisors is an integer number (20454540).

Almost surely, 2^74999969 is an apocalyptic number.

It is an amenable number.

74999969 is a deficient number, since it is larger than the sum of its proper divisors (6818191).

74999969 is a wasteful number, since it uses less digits than its factorization.

74999969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6818190.

The product of its digits is 9920232, while the sum is 62.

The square root of 74999969 is about 8660.2522480584. The cubic root of 74999969 is about 421.7162745477.

The spelling of 74999969 in words is "seventy-four million, nine hundred ninety-nine thousand, nine hundred sixty-nine".