74749249 has 8 divisors (see below), whose sum is σ = 78884000. Its totient is φ = 70634592.

The previous prime is 74749229. The next prime is 74749253. The reversal of 74749249 is 94294747.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74749249 - 2⁷ = 74749121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74749199 and 74749208.

It is not an unprimeable number, because it can be changed into a prime (74749229) 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 7 ways as a sum of consecutive naturals, for example, 2962 + ... + 12580.

It is an arithmetic number, because the mean of its divisors is an integer number (9860500).

Almost surely, 2^74749249 is an apocalyptic number.

It is an amenable number.

74749249 is a deficient number, since it is larger than the sum of its proper divisors (4134751).

74749249 is a wasteful number, since it uses less digits than its factorization.

74749249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10047.

The product of its digits is 508032, while the sum is 46.

The square root of 74749249 is about 8645.7648013348. The cubic root of 74749249 is about 421.2458266074.

The spelling of 74749249 in words is "seventy-four million, seven hundred forty-nine thousand, two hundred forty-nine".