74394993 has 16 divisors (see below), whose sum is σ = 100509696. Its totient is φ = 48943440.

The previous prime is 74394979. The next prime is 74394997. The reversal of 74394993 is 39949347.

It is not a de Polignac number, because 74394993 - 2⁴ = 74394977 is a prime.

It is a super-2 number, since 2×74394993² = 11069229966940098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74394997) 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, 81208 + ... + 82118.

It is an arithmetic number, because the mean of its divisors is an integer number (6281856).

Almost surely, 2^74394993 is an apocalyptic number.

It is an amenable number.

74394993 is a deficient number, since it is larger than the sum of its proper divisors (26114703).

74394993 is a wasteful number, since it uses less digits than its factorization.

74394993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244.

The product of its digits is 734832, while the sum is 48.

The square root of 74394993 is about 8625.2532136744. The cubic root of 74394993 is about 420.5793082993.

The spelling of 74394993 in words is "seventy-four million, three hundred ninety-four thousand, nine hundred ninety-three".