74409949 has 2 divisors, whose sum is σ = 74409950. Its totient is φ = 74409948.

The previous prime is 74409943. The next prime is 74410019. The reversal of 74409949 is 94990447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59059225 + 15350724 = 7685^2 + 3918^2 .

It is a cyclic number.

It is not a de Polignac number, because 74409949 - 2¹⁵ = 74377181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74409899 and 74409908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74409943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37204974 + 37204975.

It is an arithmetic number, because the mean of its divisors is an integer number (37204975).

Almost surely, 2^74409949 is an apocalyptic number.

It is an amenable number.

74409949 is a deficient number, since it is larger than the sum of its proper divisors (1).

74409949 is an equidigital number, since it uses as much as digits as its factorization.

74409949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 74409949 is about 8626.1201591446. The cubic root of 74409949 is about 420.6074901361.

The spelling of 74409949 in words is "seventy-four million, four hundred nine thousand, nine hundred forty-nine".