74399447 has 2 divisors, whose sum is σ = 74399448. Its totient is φ = 74399446.

The previous prime is 74399441. The next prime is 74399453. The reversal of 74399447 is 74499347.

It is a balanced prime because it is at equal distance from previous prime (74399441) and next prime (74399453).

It is a cyclic number.

It is not a de Polignac number, because 74399447 - 2⁴ = 74399431 is a 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 (74399441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37199723 + 37199724.

It is an arithmetic number, because the mean of its divisors is an integer number (37199724).

Almost surely, 2^74399447 is an apocalyptic number.

74399447 is a deficient number, since it is larger than the sum of its proper divisors (1).

74399447 is an equidigital number, since it uses as much as digits as its factorization.

74399447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 47.

The square root of 74399447 is about 8625.5114051284. The cubic root of 74399447 is about 420.5877014396.

The spelling of 74399447 in words is "seventy-four million, three hundred ninety-nine thousand, four hundred forty-seven".