74849471 has 2 divisors, whose sum is σ = 74849472. Its totient is φ = 74849470.

The previous prime is 74849461. The next prime is 74849479. The reversal of 74849471 is 17494847.

It is a strong prime.

It is an emirp because it is prime and its reverse (17494847) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74849471 is a prime.

It is a super-3 number, since 3×74849471³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74849479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37424735 + 37424736.

It is an arithmetic number, because the mean of its divisors is an integer number (37424736).

Almost surely, 2^74849471 is an apocalyptic number.

74849471 is a deficient number, since it is larger than the sum of its proper divisors (1).

74849471 is an equidigital number, since it uses as much as digits as its factorization.

74849471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 44.

The square root of 74849471 is about 8651.5588768730. The cubic root of 74849471 is about 421.4340079626.

The spelling of 74849471 in words is "seventy-four million, eight hundred forty-nine thousand, four hundred seventy-one".