74739449 has 2 divisors, whose sum is σ = 74739450. Its totient is φ = 74739448.

The previous prime is 74739439. The next prime is 74739473. The reversal of 74739449 is 94493747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52461049 + 22278400 = 7243^2 + 4720^2 .

It is a cyclic number.

It is not a de Polignac number, because 74739449 - 2¹⁶ = 74673913 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (74739439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37369724 + 37369725.

It is an arithmetic number, because the mean of its divisors is an integer number (37369725).

Almost surely, 2^74739449 is an apocalyptic number.

It is an amenable number.

74739449 is a deficient number, since it is larger than the sum of its proper divisors (1).

74739449 is an equidigital number, since it uses as much as digits as its factorization.

74739449 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 74739449 is about 8645.1980312772. The cubic root of 74739449 is about 421.2274166586.

The spelling of 74739449 in words is "seventy-four million, seven hundred thirty-nine thousand, four hundred forty-nine".