74229945 has 16 divisors (see below), whose sum is σ = 121010112. Its totient is φ = 38841920.

The previous prime is 74229943. The next prime is 74229949. The reversal of 74229945 is 54992247.

It is not a de Polignac number, because 74229945 - 2¹ = 74229943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74229897 and 74229906.

It is not an unprimeable number, because it can be changed into a prime (74229943) 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 in 15 ways as a sum of consecutive naturals, for example, 45891 + ... + 47480.

It is an arithmetic number, because the mean of its divisors is an integer number (7563132).

Almost surely, 2^74229945 is an apocalyptic number.

It is an amenable number.

74229945 is a deficient number, since it is larger than the sum of its proper divisors (46780167).

74229945 is a wasteful number, since it uses less digits than its factorization.

74229945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93432.

The product of its digits is 181440, while the sum is 42.

The square root of 74229945 is about 8615.6801820866. The cubic root of 74229945 is about 420.2680545081.

The spelling of 74229945 in words is "seventy-four million, two hundred twenty-nine thousand, nine hundred forty-five".