74213947 has 2 divisors, whose sum is σ = 74213948. Its totient is φ = 74213946.

The previous prime is 74213941. The next prime is 74213963. The reversal of 74213947 is 74931247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74213947 - 2¹⁵ = 74181179 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74213941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37106973 + 37106974.

It is an arithmetic number, because the mean of its divisors is an integer number (37106974).

Almost surely, 2^74213947 is an apocalyptic number.

74213947 is a deficient number, since it is larger than the sum of its proper divisors (1).

74213947 is an equidigital number, since it uses as much as digits as its factorization.

74213947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 74213947 is about 8614.7517085520. The cubic root of 74213947 is about 420.2378603530.

The spelling of 74213947 in words is "seventy-four million, two hundred thirteen thousand, nine hundred forty-seven".