74279117 has 8 divisors (see below), whose sum is σ = 81702912. Its totient is φ = 67525260.

The previous prime is 74279099. The next prime is 74279141. The reversal of 74279117 is 71197247.

It is not a de Polignac number, because 74279117 - 2⁸ = 74278861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74279147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26573 + ... + 29234.

It is an arithmetic number, because the mean of its divisors is an integer number (10212864).

Almost surely, 2^74279117 is an apocalyptic number.

It is an amenable number.

74279117 is a deficient number, since it is larger than the sum of its proper divisors (7423795).

74279117 is an equidigital number, since it uses as much as digits as its factorization.

74279117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55840 (or 55818 counting only the distinct ones).

The product of its digits is 24696, while the sum is 38.

The square root of 74279117 is about 8618.5333439049. The cubic root of 74279117 is about 420.3608331450.

The spelling of 74279117 in words is "seventy-four million, two hundred seventy-nine thousand, one hundred seventeen".